CN216418080U - Magnetic suspension blood pump rotor - Google Patents
Magnetic suspension blood pump rotor Download PDFInfo
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- CN216418080U CN216418080U CN202121685508.1U CN202121685508U CN216418080U CN 216418080 U CN216418080 U CN 216418080U CN 202121685508 U CN202121685508 U CN 202121685508U CN 216418080 U CN216418080 U CN 216418080U
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- impeller
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- ring groove
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Abstract
The utility model discloses a magnetic suspension blood pump rotor, which relates to the technical field of pump body rotors and comprises an impeller cover, an impeller bottom and magnetic blocks, wherein a first connecting structure is arranged between the impeller cover and the impeller bottom; the first connecting structure comprises a first clamping ring convexly arranged on the bottom surface of the impeller cover and a first step ring groove arranged at the top of the impeller bottom, and the first clamping ring is clamped in the first step ring groove; the second connecting structure comprises a limiting ring convexly arranged on the inner wall of the impeller bottom and a plurality of placing grooves formed in the bottom surface of the inner wall of the impeller bottom, the plurality of magnetic blocks are respectively clamped in the plurality of placing grooves, and the top surfaces of the magnetic blocks are contacted with the bottom surface of the limiting ring; and a welding sealing structure is also arranged between the impeller cover and the impeller bottom. The utility model has the advantages of high structural strength, good sealing performance and high positioning precision.
Description
Technical Field
The utility model relates to the technical field of medical equipment, in particular to a magnetic suspension blood pump rotor.
Background
In the existing magnetic suspension blood pump rotor, the assembly mode between the impeller bottom and the impeller cover is manual gluing, the overall efficiency is low, the sealing performance is poor, meanwhile, the magnet is installed and is glued on the side face of the magnet, the magnet is pressed manually to form tight fit in the groove at the impeller bottom, the poor positioning performance can be caused while the efficiency is low, and finally generated unbalance can cause vibration and noise of a product during high-speed rotation.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model provides a magnetic suspension blood pump rotor.
A magnetic suspension blood pump rotor comprises an impeller cover and an impeller bottom, wherein a first connecting structure is arranged between the impeller cover and the impeller bottom, an installation cavity is formed in the center of the top surface of the impeller bottom, a plurality of magnetic blocks are arranged in the installation cavity, and a second connecting structure is arranged between the magnetic blocks and the impeller bottom; the first connecting structure comprises a first clamping ring convexly arranged on the bottom surface of the impeller cover and a first step ring groove arranged at the top of the impeller bottom, and the first clamping ring is clamped in the first step ring groove; the second connecting structure comprises a limiting ring convexly arranged on the inner wall of the impeller bottom and a plurality of placing grooves formed in the bottom surface of the inner wall of the impeller bottom, the plurality of magnetic blocks are respectively clamped in the plurality of placing grooves, and the top surfaces of the magnetic blocks are contacted with the bottom surface of the limiting ring; and a welding and sealing structure is also arranged between the impeller cover and the impeller bottom. In the whole magnetic suspension blood pump rotor, the thickness of the outer wall of the bottom of the impeller is increased, so that a first step ring groove is formed at the top of the impeller, furthermore, a first clamping ring is convexly formed at the bottom of the impeller cover, the contact area between the impeller cover and the bottom of the impeller is improved through the clamping action between the first clamping ring and the first step ring groove, so that the sealing performance is improved in a phase-changing manner, meanwhile, a welding sealing structure is arranged between the impeller cover and the impeller cover, the welding sealing structure is mainly formed through ultrasonic welding, and the sealing performance between the first clamping ring and the first step ring groove can be greatly improved; further, the mode shaping of moulding plastics through the inserts between the magnetic block and the impeller end, wherein, the inserts is moulded plastics mainly and is embedded into the magnetic block at the bottom of the impeller of moulding plastics, realize integrated into one piece at the bottom of magnetic block and the impeller at last, so, the standing groove has been formed in the vertical direction of inner wall at the bottom of the impeller, the spacing ring has been formed on the horizontal direction of inner wall at the bottom of the impeller, it is reliable spacing to a plurality of magnetic blocks through spacing ring and standing groove, avoid moulding plastics out at the bottom of the impeller earlier, the magnetic block is pressed to the impeller end inside to manual again, the efficiency of manufacturing is improved, and guarantee the magnetic block location through the mould, thereby the positioning accuracy of magnetic block has been guaranteed greatly.
Preferably, the welding and sealing structure comprises a first annular welding rib arranged on the bottom surface of the first clamping ring, and the first annular welding rib is used for sealing a gap between the first clamping ring and the first step ring groove after being heated and melted. A first annular welding rib is added on the bottom surface of a first clamping ring of an impeller cover, then ultrasonic welding is carried out, the first annular welding rib can generate heat in vibration friction to melt the first annular welding rib, and therefore a good sealing structure is formed in a gap between the first clamping ring and a first step ring groove.
Preferably, a second clamping ring is convexly arranged at the center of the bottom surface of the impeller cover, a second step ring groove is formed at the center of the bottom of the impeller, and the second clamping ring is clamped in the second step ring groove; the welding and sealing structure further comprises a second annular welding rib arranged on the bottom surface of the second clamping ring, and the second annular welding rib is used for sealing a gap between the second clamping ring and the second step ring groove after being heated and melted. The structural reliability and the sealing performance are further improved by arranging the second step ring groove and the second clamping ring; similarly, a second annular welding rib is added on the bottom surface of a second clamping ring of the impeller cover, then ultrasonic welding is carried out, and the second annular welding rib can generate heat in vibration friction to melt the second annular welding rib, so that a good sealing structure is formed in a gap between the second clamping ring and a second step ring groove.
The utility model has the beneficial effects that:
in the utility model, the top of the outer wall of the impeller bottom is provided with a first step ring groove, further, the bottom of the impeller cover is convexly provided with a first clamping ring, the contact area between the impeller cover and the impeller bottom is improved through the clamping action between the first clamping ring and the first step ring groove, so that the phase change is realized, the sealing performance is improved, meanwhile, a welding sealing structure is arranged between the first clamping ring and the first step ring groove, and the welding sealing structure is mainly formed through ultrasonic welding, so that the sealing performance between the first clamping ring and the first step ring groove can be greatly improved; further, the mode shaping of moulding plastics through the inserts between the magnetic block and the impeller end, wherein, the inserts is moulded plastics mainly and is embedded into the magnetic block at the bottom of the impeller of moulding plastics, realize integrated into one piece at the bottom of magnetic block and the impeller at last, so, the standing groove has been formed in the vertical direction of inner wall at the bottom of the impeller, the spacing ring has been formed on the horizontal direction of inner wall at the bottom of the impeller, it is reliable spacing to a plurality of magnetic blocks through spacing ring and standing groove, avoid moulding plastics out at the bottom of the impeller earlier, the magnetic block is pressed to the impeller end inside to manual again, the efficiency of manufacturing is improved, and guarantee the magnetic block location through the mould, thereby the positioning accuracy of magnetic block has been guaranteed greatly.
Drawings
In order to more clearly illustrate the detailed description of the utility model or the technical solutions in the prior art, the drawings that are needed in the detailed description of the utility model or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a perspective view of the structure of the present invention;
FIG. 2 is a cross-sectional view of the structure of FIG. 1 according to the present invention;
FIG. 3 is a perspective view of the construction of the impeller base of the present invention;
FIG. 4 is a cross-sectional view of the structure of FIG. 3 in accordance with the present invention;
FIG. 5 is a perspective view of the construction of the impeller cover of the present invention;
fig. 6 is a cross-sectional view of the structure of fig. 5 in accordance with the present invention.
Reference numerals:
the impeller comprises an impeller cover 1, an impeller cover 11, a second clamping ring 2, an impeller bottom 21, a mounting cavity 22, a second step ring groove 3, a first connecting structure 31, a first clamping ring 32, a first step ring groove 4, a magnetic block 5, a second connecting structure 51, a limiting ring 52, a placing groove 6, a welding sealing structure 61, a first annular welding rib 62 and a second annular welding rib.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships conventionally arranged when the products of the present invention are used, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements indicated must have specific orientations, be constructed in specific orientations, and operated, and thus, should not be construed as limiting the present invention.
As shown in fig. 1 to 6, a magnetic suspension blood pump rotor comprises an impeller cover 1 and an impeller bottom 2, wherein a first connecting structure 3 is arranged between the impeller cover 1 and the impeller bottom 2, an installation cavity 21 is formed in the center of the top surface of the impeller bottom 2, a plurality of magnetic blocks 4 are arranged in the installation cavity 21, and a second connecting structure 5 is arranged between the magnetic blocks 4 and the impeller bottom 2; the first connecting structure 3 comprises a first clamping ring 31 convexly arranged on the bottom surface of the impeller cover 1 and a first step ring groove 32 arranged on the top of the impeller bottom 2, and the first clamping ring 31 is clamped in the first step ring groove 32; the second connecting structure 5 comprises a limiting ring 51 convexly arranged on the inner wall of the impeller bottom 2 and a plurality of placing grooves 52 arranged on the bottom surface of the inner wall of the impeller bottom 2, the plurality of magnetic blocks 4 are respectively clamped in the plurality of placing grooves 52, and the top surfaces of the magnetic blocks 4 contact with the bottom surface of the limiting ring 51; and a welding and sealing structure 6 is also arranged between the impeller cover 1 and the impeller bottom 2.
In the embodiment, it should be noted that, in the whole magnetic suspension blood pump rotor, the thickness of the outer wall of the impeller bottom 2 is increased, so that the top of the impeller bottom 2 is provided with a first stepped ring groove 32, further, the bottom of the impeller cover 1 is convexly provided with a first clamping ring 31, the contact area between the impeller cover 1 and the impeller bottom 2 is increased through the clamping action between the first clamping ring 31 and the first stepped ring groove 32, so that the phase change is performed, the sealing performance is improved, meanwhile, a welding sealing structure 6 is arranged between the first clamping ring 31 and the first stepped ring groove 32, and the welding sealing structure 6 is mainly formed through ultrasonic welding, so that the sealing performance between the first clamping ring 31 and the first stepped ring groove 32 can be greatly improved; further, the mode shaping of moulding plastics through the inserts between the magnetic block 4 and the impeller end 2, wherein, the inserts is moulded plastics and is mainly embedded into magnetic block 4 when moulding plastics the impeller end 2, realize at last that magnetic block 4 and impeller end 2 integrated into one piece, so, standing groove 52 has been formed on the vertical direction of 2 inner walls at the impeller end, spacing ring 51 has been formed on the horizontal direction of 2 inner walls at the impeller end, it is reliable spacing to a plurality of magnetic blocks 4 through spacing ring 51 and standing groove 52, avoid moulding plastics out at the impeller end 2 earlier, manual again towards the inside magnetic block 4 that presses down of 2 at the impeller end, the efficiency of manufacture is improved, and guarantee the location of magnetic block 4 through the mould, thereby the positioning accuracy of magnetic block 4 has been guaranteed greatly.
Specifically, the welding and sealing structure 6 includes a first annular welding rib 61 disposed on a bottom surface of the first snap ring 31, and the first annular welding rib 61 is used for sealing a gap between the first snap ring 31 and the first stepped ring groove 32 after being melted by heat.
In the present embodiment, the first annular welding rib 61 is added to the bottom surface of the first snap ring 31 of the impeller cover 1, and then the first annular welding rib 61 is ultrasonically welded, so that the first annular welding rib 61 generates heat during vibration friction to melt itself, thereby forming a good sealing structure in the gap between the first snap ring 31 and the first stepped ring groove 32.
Specifically, a second clamping ring 11 is convexly arranged at the center of the bottom surface of the impeller cover 1, a second step ring groove 22 is arranged at the center of the impeller bottom 2, and the second clamping ring 11 is clamped in the second step ring groove 22; the welding and sealing structure 6 further includes a second annular welding rib 62 disposed on the bottom surface of the second snap ring 11, and the second annular welding rib 62 is used for sealing a gap between the second snap ring 11 and the second stepped ring groove 22 after being melted by heat.
In the present embodiment, the second stepped ring groove 22 and the second snap ring 11 are provided to further improve the structural reliability and the sealing performance; similarly, a second annular welding rib 62 is added to the bottom surface of the second retaining ring 11 of the impeller cover 1, and then ultrasonic welding is performed, and the second annular welding rib 62 generates heat during vibration friction to melt itself, thereby forming a good sealing structure in the gap between the second retaining ring 11 and the second stepped ring groove 22.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (1)
1. A magnetic suspension blood pump rotor is characterized by comprising an impeller cover and an impeller bottom, wherein a first connecting structure is arranged between the impeller cover and the impeller bottom, an installation cavity is formed in the center of the top surface of the impeller bottom, a plurality of magnetic blocks are arranged in the installation cavity, and a second connecting structure is arranged between the magnetic blocks and the impeller bottom; wherein the content of the first and second substances,
the first connecting structure comprises a first clamping ring convexly arranged on the bottom surface of the impeller cover and a first step ring groove arranged at the top of the impeller bottom, and the first clamping ring is clamped in the first step ring groove;
the second connecting structure comprises a limiting ring convexly arranged on the inner wall of the impeller bottom and a plurality of placing grooves formed in the bottom surface of the inner wall of the impeller bottom, the plurality of magnetic blocks are respectively clamped in the plurality of placing grooves, and the top surfaces of the magnetic blocks are contacted with the bottom surface of the limiting ring;
a welding sealing structure is also arranged between the impeller cover and the impeller bottom;
the welding and sealing structure comprises a first annular welding rib arranged on the bottom surface of the first clamping ring, and the first annular welding rib is used for sealing a gap between the first clamping ring and the first step ring groove after being heated and melted;
a second clamping ring is convexly arranged at the center of the bottom surface of the impeller cover, a second step ring groove is formed at the center of the bottom of the impeller, and the second clamping ring is clamped in the second step ring groove; the welding and sealing structure further comprises a second annular welding rib arranged on the bottom surface of the second clamping ring, and the second annular welding rib is used for sealing a gap between the second clamping ring and the second step ring groove after being heated and melted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121685508.1U CN216418080U (en) | 2021-07-23 | 2021-07-23 | Magnetic suspension blood pump rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121685508.1U CN216418080U (en) | 2021-07-23 | 2021-07-23 | Magnetic suspension blood pump rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216418080U true CN216418080U (en) | 2022-05-03 |
Family
ID=81315741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121685508.1U Active CN216418080U (en) | 2021-07-23 | 2021-07-23 | Magnetic suspension blood pump rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216418080U (en) |
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2021
- 2021-07-23 CN CN202121685508.1U patent/CN216418080U/en active Active
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