CN215170752U - Asymmetric auxiliary rotor with inclined plane - Google Patents
Asymmetric auxiliary rotor with inclined plane Download PDFInfo
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- CN215170752U CN215170752U CN202023289053.XU CN202023289053U CN215170752U CN 215170752 U CN215170752 U CN 215170752U CN 202023289053 U CN202023289053 U CN 202023289053U CN 215170752 U CN215170752 U CN 215170752U
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Abstract
An asymmetric auxiliary rotor with an inclined plane comprises a rotor shaft, a rotor shaft center, a rotary tooth and a tooth tip, and is characterized in that the rotary tooth comprises an upper rotary tooth, and the upper rotary tooth consists of 10 sections of curves; the inclined plane is arranged on the right side surface of the upper rotary tooth, and one side of the inclined plane close to the rotor shaft is higher than one side of the principle rotor shaft; the rotary teeth also comprise lower rotary teeth, and the lower rotary teeth and the upper rotary teeth are connected with each other and are centrosymmetric by taking the axis of the rotor as the center of a circle. The inclined plane is arranged on the side face of the free end of the rotary tooth, so that the problem of mechanical structure interference caused by thermal expansion of materials is avoided in the process of high-temperature and high-speed movement of the rotor, and the sealing performance can be guaranteed to the maximum extent.
Description
Technical Field
The utility model relates to an air compressor field, in particular to take asymmetric pair rotor in inclined plane.
Background
The Roots blower is a driven fluid machine for lifting low-pressure gas into high-pressure gas, and is widely applied to the fields of aquatic products, sewage treatment and the like.
Because a gap exists between the impeller of the Roots blower and the casing, high-pressure gas leakage is easily caused. And the compressed air generates a large amount of heat, and the rotary teeth in the high-temperature and high-speed running process for a long time are subjected to thermal expansion, so that the probability of mechanical structure interference and failure is increased.
SUMMERY OF THE UTILITY MODEL
In order to realize the purpose, the utility model discloses the technical scheme who adopts is:
an asymmetric auxiliary rotor with inclined planes, which comprises a rotor shaft, a rotor shaft center, a rotary tooth and a tooth tip, and is characterized in that,
the rotary teeth comprise upper rotary teeth, and the upper rotary teeth are composed of 10 sections of curves: a first curve outside the tooth crest, a second curve outside the tooth crest, a third curve outside the tooth crest, a first curve inside the tooth crest, a second curve inside the tooth root, a third curve inside the tooth root, a fourth curve inside the tooth root, a fifth curve inside the tooth root, a first curve outside the tooth root, and a second curve outside the tooth root;
the first curve at the outer side of the tooth top, the second curve at the outer side of the tooth top and the third curve at the outer side of the tooth top are smoothly connected in sequence;
the first curve on the inner side of the addendum, the second curve on the inner side of the dedendum, the third curve on the inner side of the dedendum, the fourth curve on the inner side of the dedendum, the fifth curve on the inner side of the dedendum, the first curve on the outer side of the dedendum and the second curve on the outer side of the dedendum are smoothly connected in sequence;
the third curve at the outer side of the tooth top and the first curve at the inner side of the tooth top are in unsmooth connection, the tooth tip is arranged at the connection position, and the tooth tip angle is smaller than 90 degrees;
the inclined plane is arranged on the right side surface of the upper rotary tooth, and one side of the inclined plane close to the rotor shaft is higher than one side far away from the rotor shaft;
the rotary teeth also comprise lower rotary teeth, and the lower rotary teeth and the upper rotary teeth are connected with each other and are centrosymmetric by taking the axis of the rotor as the center of a circle;
in a preferred embodiment of the present invention, the upper end of the inclined plane starts from the tooth tip, the left side of the lower end starts from the first curve outside the tooth crest, and the right side ends from the first curve inside the tooth crest.
In a preferred embodiment of the present invention, the left side of the rotor shaft is a fixed end, and the right side is a free end.
In a preferred embodiment of the present invention, a fixed end groove is disposed on the fixed end side wall, and a free end groove is disposed on the free end side wall, and an axis where the fixed end groove and the free end groove are located is parallel to a central axis of the rotor shaft.
The beneficial effects of the utility model reside in that:
the utility model provides a take asymmetric vice rotor in inclined plane sets up the inclined plane through only revolving tooth free end side for the rotor avoids producing the problem that mechanical structure interfered because of the material thermal energy at high temperature, high-speed motion in-process, can also guarantee the leakproofness by the at utmost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
Fig. 1 is a perspective view of the present invention.
Fig. 2 is a right side view of the present invention.
Fig. 3 is a front view of the present invention.
Fig. 4 is a plan view of the present invention.
Fig. 5 is a partially enlarged view of the step of the present invention.
Detailed Description
The detailed structure of the present invention will be further described with reference to the accompanying drawings and the detailed description.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
The detailed structure of the present invention will be further described with reference to the accompanying drawings and the detailed description.
Referring to fig. 1, the stepped asymmetric sub-rotor is provided with a rotor shaft 4 having a circular cross section, a fixed end 41 on the left side of the rotor shaft 4, a free end 42 on the right side of the rotor shaft 4, and a rotary tooth 1 in the middle of the rotor shaft 4.
Referring to fig. 2, the rotary teeth 1 may be divided into upper rotary teeth 1c and lower rotary teeth 1b, and the upper rotary teeth 1c and the lower rotary teeth 1b are centrosymmetric along the rotor axis 43. The upper rotary tooth 1c consists of 10 sections of curves: a first curve 11 outside the tooth crest with a curvature center on the inner side, a second curve 12 outside the tooth crest with a curvature center on the inner side, a third curve 13 outside the tooth crest with a curvature center on the inner side, a first curve 21 inside the tooth crest with a curvature center on the inner side, a second curve 22 inside the tooth root with a curvature center on the inner side, a third curve 23 inside the tooth root with a curvature center on the inner side, a fourth curve 24 inside the tooth root with a curvature center on the inner side, a fifth curve 25 inside the tooth root with a curvature center on the inner side, a first curve 14 outside the tooth root with a curvature center on the outer side, and a second curve 15 outside the tooth root with a curvature center on the outer side.
Wherein, the first curve 11 at the outer side of the tooth top, the second curve 12 at the outer side of the tooth top and the third curve 13 at the outer side of the tooth top are smoothly connected in sequence; the first curve 21 at the inner side of the tooth top, the second curve 22 at the inner side of the tooth root, the third curve 23 at the inner side of the tooth root, the fourth curve 24 at the inner side of the tooth root, the fifth curve 25 at the inner side of the tooth root, the first curve 14 at the outer side of the tooth root and the second curve 15 at the outer side of the tooth root are also smoothly connected in sequence; the third curve 13 at the outer side of the tooth top and the first curve 21 at the inner side of the tooth top are connected in a non-smooth way, the joint is a tooth tip 1a, and the tooth tip 1a is an acute angle.
The upper and lower rotary teeth 1c and 1b are vertically linearly moved along the middle point of the rotor shaft 4 toward the fixed and free ends 41 and 42, thereby forming the entire rotary tooth 1.
Referring to fig. 3 and 5 in combination, on the right side surface of the rotary tooth 1, the upper rotary tooth 1c and the lower rotary tooth 1b are also symmetrically arranged with an inclined surface 3a, respectively, the upper end of the inclined surface 3a starts from the tooth tip 1a, the lower end thereof ends in a curve, the left side of the curve starts from the first curve 11 outside the tooth tip, the right side thereof ends in the first curve 21 inside the tooth tip, and the side of the slope 3a near the rotor shaft 4 is higher than the side of the principle rotor shaft 4. When the rotor rotates at high temperature and high speed, the fixed end 41 is fixed on the adjacent shaft sleeve in an interference fit manner, and the free end 42 is fixed on the adjacent shaft sleeve in a transition fit manner; likewise, the step 3a allows clearance for the side of the tooth 1 near the free end 42. When the rotor shaft 4 is heated and the material expands, the mechanical structure interference can be effectively avoided.
Referring to fig. 4, a fixed-end recess 41a for fixing the rotor is provided on a sidewall of the fixed end 41, and another free-end recess 42a for fixing the rotor is provided on a sidewall of the free end 42. The fixed end groove 41a and the free end groove 42 are located on an axis parallel to the central axis of the rotor shaft 4.
Claims (4)
1. An asymmetric auxiliary rotor with inclined planes, which comprises a rotor shaft, a rotor shaft center, a rotary tooth and a tooth tip, and is characterized in that,
the rotary teeth comprise upper rotary teeth, and the upper rotary teeth are composed of 10 sections of curves: a first curve outside the tooth crest, a second curve outside the tooth crest, a third curve outside the tooth crest, a first curve inside the tooth crest, a second curve inside the tooth root, a third curve inside the tooth root, a fourth curve inside the tooth root, a fifth curve inside the tooth root, a first curve outside the tooth root, and a second curve outside the tooth root;
the first curve at the outer side of the tooth top, the second curve at the outer side of the tooth top and the third curve at the outer side of the tooth top are smoothly connected in sequence;
the first curve on the inner side of the addendum, the second curve on the inner side of the dedendum, the third curve on the inner side of the dedendum, the fourth curve on the inner side of the dedendum, the fifth curve on the inner side of the dedendum, the first curve on the outer side of the dedendum and the second curve on the outer side of the dedendum are smoothly connected in sequence;
the third curve at the outer side of the tooth top and the first curve at the inner side of the tooth top are in unsmooth connection, the tooth tip is arranged at the connection position, and the tooth tip angle is smaller than 90 degrees;
the inclined plane is arranged on the right side surface of the upper rotary tooth, and one side of the inclined plane close to the rotor shaft is higher than one side far away from the rotor shaft;
the rotary teeth further comprise lower rotary teeth, and the lower rotary teeth and the upper rotary teeth are connected with each other and are centrosymmetric by taking the axis of the rotor as a circle center.
2. The beveled asymmetric sub-rotor as in claim 1, wherein said beveled surface has an upper end that begins at said tooth tip, a lower end that begins at a first curve on the outside of the tooth tip on the left side and ends at a first curve on the inside of the tooth tip on the right side.
3. The beveled asymmetric sub-rotor as in claim 1, wherein said rotor shaft has a fixed end on the left side and a free end on the right side.
4. The beveled asymmetric rotor as set forth in claim 3, wherein said fixed end recess is disposed in said fixed end side wall and said free end recess is disposed in said free end side wall, said fixed end recess and said free end recess being disposed on axes parallel to a central axis of said rotor shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023289053.XU CN215170752U (en) | 2020-12-30 | 2020-12-30 | Asymmetric auxiliary rotor with inclined plane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023289053.XU CN215170752U (en) | 2020-12-30 | 2020-12-30 | Asymmetric auxiliary rotor with inclined plane |
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| Publication Number | Publication Date |
|---|---|
| CN215170752U true CN215170752U (en) | 2021-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202023289053.XU Active CN215170752U (en) | 2020-12-30 | 2020-12-30 | Asymmetric auxiliary rotor with inclined plane |
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| CN (1) | CN215170752U (en) |
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- 2020-12-30 CN CN202023289053.XU patent/CN215170752U/en active Active
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