CN210819088U - Small-gap closed impeller flow passage surface abrasive particle flow finishing device - Google Patents
Small-gap closed impeller flow passage surface abrasive particle flow finishing device Download PDFInfo
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- CN210819088U CN210819088U CN201921385049.8U CN201921385049U CN210819088U CN 210819088 U CN210819088 U CN 210819088U CN 201921385049 U CN201921385049 U CN 201921385049U CN 210819088 U CN210819088 U CN 210819088U
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Abstract
The utility model provides a little clearance closed impeller runner surface abrasive particle flow is smooth and is put, including upper cover plate (1), support cover (2), apron (3) down, splitter ring (4), be used for carrying out abrasive particle flow smooth and is put on to little clearance closed impeller runner surface, to traditional realization runner surface finish if means such as blowing sand and peening, cooperation through splitter ring and little clearance closed impeller, can improve runner surface finish effect, and the volume of going is even, the uniformity is good, when having guaranteed the finish effect, moreover, the steam generator is stable in structure, and is easy and simple to handle.
Description
Technical Field
The utility model relates to a booth clearance closed impeller runner surface abrasive particle smooth finishing processingequipment belongs to 3D and prints metal parts's smooth finishing in surface field.
Background
The small-gap closed impeller is a key part of a turbopump of a rocket engine, and has extremely high requirements on the surface quality of a flow passage. The forming method before the selective laser melting forming method is split machining and brazing, the surface roughness of the flow channel is guaranteed by machining, and can reach Ra0.8 mu m or below.
After the selective laser melting forming method is adopted, the integral structural strength and the mechanical property of the impeller are greatly improved compared with the prior art, the surface roughness of a runner is generally Ra12.5-25 mu m and cannot meet the use requirement, 6 small-gap closed impeller blades are alternately distributed in length, the height dimension of the impeller runner is not more than 3mm, and the traditional surface finishing method such as manual grinding cannot enable a tool to reach the surface of the runner, sand blowing, shot blasting and the like cannot effectively finish the surface of the runner.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem be: aiming at the problem that the roughness of the traditional magic inner flow surface finishing method is difficult to meet the use requirement in the prior art, the small-gap closed impeller flow channel surface abrasive particle finishing processing device is provided.
The utility model provides an above-mentioned technical problem realize through following technical scheme:
the utility model provides a little clearance closed impeller runner surface abrasive flow finishing processingequipment, includes upper cover plate, supports cover, lower apron, splitter ring for distribute the splitter ring suit in the closed impeller outside that the processing is finished through the runner to closed impeller, closed impeller is fixed with lower apron chucking through the butt joint step that sets up on the lower apron, be provided with the support cover that supports the upper cover plate down on the apron, be provided with the butt joint step on the upper cover plate to carry out the accordant connection through butt joint step and closed impeller, upper cover plate, support cover, lower apron, splitter ring, closed impeller constitute the abrasive flow finishing cavity jointly.
The lower surface of the upper cover plate is provided with a step which is connected with the closed impeller in a matching way, and the diameter of the step is the same as the inner diameter of the support sleeve.
The butt joint step of the upper cover plate and the support sleeve are in clearance fit, and the fit tolerance is 0.6-0.8 mm.
The lower cover plate is evenly provided with 3 fan-shaped flow passages, the outer diameters of the fan-shaped flow passages are the same as the inner diameter of the supporting sleeve, and the inner diameters of the fan-shaped flow passages are larger than the outer diameter of the splitter ring.
And the lower cover plate is provided with a step which is used for being connected with the closed impeller in a matching way.
And a circular step for fixing on the abrasive flow processing equipment is arranged at the lower part of the lower cover plate.
6 fan ring-shaped bosses are uniformly distributed on the edge of the diverter ring, the fan ring-shaped angle is 30 degrees, and the height is 10 mm.
The upper cover plate, the supporting sleeve and the lower cover plate are made of aluminum alloy, and the shunt ring is made of nylon plastic.
Compared with the prior art, the utility model the advantage lie in:
the utility model provides a pair of booth clearance closed impeller runner surface abrasive flow finishing processingequipment, through the cooperation of design splitter ring and booth clearance closed impeller, 6 bosss seal length respectively, short blade runner, through the substep processing of runner, can improve runner surface finishing effect, set up the internal diameter to apron fan ring channel down simultaneously and be greater than splitter ring external diameter size, can reduce the resistance of abrasive flow processing in-process abrasive material, improve the trafficability characteristic of abrasive material, the whole abrasive particle of processingequipment is effectual, the uniformity is good.
Drawings
Fig. 1 is a schematic structural view of a closed impeller provided by the utility model;
fig. 2 is a schematic structural view of the abrasive flow processing device provided by the utility model matching with an impeller;
fig. 3 is a schematic structural view of the matching between the splitter ring and the part of the abrasive flow tool provided by the utility model;
FIG. 4 is a schematic view of a lower cover plate fan ring flow path;
Detailed Description
The utility model provides a little clearance closed impeller runner surface abrasive particle smooth finish processingequipment, closed impeller is as shown in figure 1, including upper cover plate 1, support cover 2, lower cover plate 3, splitter ring 4, upper cover plate 1, support cover 2, splitter ring 4, the profile of lower cover plate 3 is circular for distribute the splitter ring 4 suit in the closed impeller outside of processing smooth through the runner to closed impeller, closed impeller is fixed with 3 chucking of lower cover plate through the butt joint step that sets up on the lower cover plate 3, be provided with the support cover 2 that supports upper cover plate 1 on the lower cover plate 3, upper cover plate 1 is provided with the butt joint step to carry out the accordant connection through butt joint step and closed impeller, upper cover plate 1, support cover 2, lower cover plate 3, splitter ring 4, closed impeller constitute the abrasive particle smooth finish cavity jointly, wherein:
the lower surface of the upper cover plate 1 is provided with a step which is matched and connected with the closed impeller, the diameter of the step is the same as the inner diameter of the support sleeve 2, the step is 105mm, and the height of the step is 3 mm; meanwhile, the step of the upper cover plate 1 is in clearance fit with the support sleeve 2, and the fit tolerance is 0.6-0.8 mm; the lower cover plate 3 is also provided with steps which are used for being matched and connected with the closed impeller, the diameter of each step is 14, and the height of each step is 10 mm;
the middle part of the lower cover plate 3 is also uniformly provided with 3 fan-shaped flow passages, the outer diameter of each fan-shaped flow passage is the same as the inner diameter of the support sleeve, the inner diameter of each fan-shaped flow passage is larger than the outer diameter of the shunt ring 4, the inner diameter of each fan-shaped flow passage is 80mm, and the outer diameter of the shunt ring 4 is 70 mm; 6 fan-shaped bosses are uniformly distributed on the edge of the shunting ring 4, the fan-shaped angle is 30 degrees, and the height is 10 mm;
in the whole abrasive particle flow finishing device, the upper cover plate 1, the support sleeve 2 and the lower cover plate 3 are made of aluminum alloy, and the splitter ring 4 is made of nylon plastic.
The following is further illustrated with reference to specific examples:
a small-gap closed impeller flow channel surface abrasive particle flow finishing device comprises an upper cover plate 1, a support sleeve 2, a lower cover plate 3 and a splitter ring 4, wherein the assembly relation is shown in figure 2, the diameter of a step at the lower part of the upper cover plate 1 and the inner diameter of the support sleeve 2 are phi 105mm, and the clearance fit tolerance of the upper cover plate and the support sleeve is 0.6-0.8 mm; as shown in fig. 4, the lower cover plate 3 is provided with three 120 ° fan-shaped annular flow passages; the inner diameter of the splitter ring 4 is equal to the outer diameter of the impeller and is 53mm, and the height of 6 bosses of the splitter ring 4 is 10 mm.
The specific working process is as follows: the small-gap closed impeller is assembled and combined after sand blowing as shown in figure 2, the position relation of the small-gap closed impeller and the splitter ring 4 is shown in figure 3, the tip of the short blade is positioned at the inner ring point of the 6 fan-shaped bosses of the splitter ring, abrasive flow processing is mainly carried out on the concave surface and the convex surface of the long blade and a runner at the moment, after the abrasive flow processing is finished, the small-gap closed impeller and the splitter ring rotate 30 degrees at the relative position of figure 3, abrasive flow processing is carried out again, and abrasive flow processing on the concave surface and the convex surface of the short blade and the runner of the short blade is finished.
The details of the present invention not described in detail in the specification are well known to those skilled in the art.
Claims (8)
1. The utility model provides a little clearance closed impeller runner surface abrasive flow finishing processingequipment which characterized in that: the abrasive particle finishing cavity comprises an upper cover plate (1), a supporting sleeve (2), a lower cover plate (3) and a splitter ring (4), wherein the splitter ring (4) used for distributing and processing finishing of the closed impeller through a flow channel is sleeved outside the closed impeller, the closed impeller is fixedly clamped with the lower cover plate (3) through a butt joint step arranged on the lower cover plate (3), the lower cover plate (3) is provided with the supporting sleeve (2) used for supporting the upper cover plate (1), the upper cover plate (1) is provided with the butt joint step and is connected with the closed impeller in a matching manner through the butt joint step, and an abrasive particle finishing cavity body is formed by the upper cover plate (1), the supporting sleeve (2), the lower cover plate (3), the splitter ring (4) and the closed impeller together.
2. The small-gap closed impeller flow passage surface abrasive finishing device as claimed in claim 1, wherein: the lower surface of the upper cover plate (1) is provided with a step which is connected with the closed impeller in a matching way, and the diameter of the step is the same as the inner diameter of the support sleeve (2).
3. The small-gap closed impeller flow passage surface abrasive finishing device as claimed in claim 2, wherein: the butt joint step of the upper cover plate (1) is in clearance fit with the support sleeve (2), and the fit tolerance is 0.6-0.8 mm.
4. The small-gap closed impeller flow passage surface abrasive finishing device as claimed in claim 1, wherein: the lower cover plate (3) is evenly provided with 3 fan-shaped flow channels, the outer diameters of the fan-shaped flow channels are the same as the inner diameter of the supporting sleeve, and the inner diameters of the fan-shaped flow channels are larger than the outer diameter of the shunting ring (4).
5. The small-gap closed impeller flow passage surface abrasive finishing device as claimed in claim 4, wherein: the lower cover plate (3) is provided with a step used for being connected with the closed impeller in a matching mode.
6. The small-gap closed impeller flow passage surface abrasive finishing device as claimed in claim 5, wherein: and a circular step for fixing on abrasive particle flow processing equipment is arranged at the lower part of the lower cover plate (3).
7. The small-gap closed impeller flow passage surface abrasive finishing device as claimed in claim 1, wherein: 6 fan-shaped bosses are uniformly distributed on the edge of the splitter ring (4), the angle of the fan-shaped bosses is 30 degrees, and the height of the fan-shaped bosses is 10 mm.
8. The small-gap closed impeller flow passage surface abrasive finishing device as claimed in claim 1, wherein: the upper cover plate (1), the supporting sleeve (2) and the lower cover plate (3) are made of aluminum alloy, and the splitter ring (4) is made of nylon plastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921385049.8U CN210819088U (en) | 2019-08-23 | 2019-08-23 | Small-gap closed impeller flow passage surface abrasive particle flow finishing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921385049.8U CN210819088U (en) | 2019-08-23 | 2019-08-23 | Small-gap closed impeller flow passage surface abrasive particle flow finishing device |
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| CN210819088U true CN210819088U (en) | 2020-06-23 |
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| CN201921385049.8U Active CN210819088U (en) | 2019-08-23 | 2019-08-23 | Small-gap closed impeller flow passage surface abrasive particle flow finishing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113524011A (en) * | 2021-06-17 | 2021-10-22 | 江苏飞船股份有限公司 | Internal tooth gear surface refining device |
-
2019
- 2019-08-23 CN CN201921385049.8U patent/CN210819088U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113524011A (en) * | 2021-06-17 | 2021-10-22 | 江苏飞船股份有限公司 | Internal tooth gear surface refining device |
| CN113524011B (en) * | 2021-06-17 | 2022-05-03 | 江苏飞船股份有限公司 | Internal tooth gear surface refining device |
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