CN114536228A - Curved surface blade of shot blasting machine - Google Patents
Curved surface blade of shot blasting machine Download PDFInfo
- Publication number
- CN114536228A CN114536228A CN202210078105.3A CN202210078105A CN114536228A CN 114536228 A CN114536228 A CN 114536228A CN 202210078105 A CN202210078105 A CN 202210078105A CN 114536228 A CN114536228 A CN 114536228A
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- CN
- China
- Prior art keywords
- working surface
- blade
- brim
- end point
- blasting machine
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C5/00—Devices or accessories for generating abrasive blasts
- B24C5/06—Impeller wheels; Rotor blades therefor
- B24C5/062—Rotor blades or vanes; Locking means therefor
Abstract
The invention relates to a curved surface blade of a shot blasting machine, which relates to the technical field of mechanical equipment and comprises a blade body, wherein one side surface of the blade body is a working surface, the side surface opposite to the working surface is a non-working surface, the working surface and the non-working surface are both in arc surface structures, and the circle center of the non-working surface is positioned above the right side of the circle center of the working surface; the upper side and the lower side of the working surface are respectively provided with an upper brim and a lower brim, the tail part of the upper brim is provided with an upper sharp corner, and the tail part of the lower brim is provided with a lower sharp corner. The air circulation is facilitated, vortex is not easy to generate, air pressure pulsation caused by vortex is avoided, and noise is reduced.
Description
Technical Field
The invention relates to the technical field of mechanical equipment, in particular to a cambered blade of an impeller head.
Background
The shot blasting technology is a typical mechanical surface treatment process and is widely used for cleaning and strengthening the surfaces of mechanical products at present. Similarly, the method also comprises the processes of shot blasting and sand blasting. The core part of the impeller head is a blade, the impeller head is mainly divided into a plane straight blade, a curved blade and a curved-straight combined blade on the market at present, although the blades are different, the thicknesses of the blades are uniform and unchangeable, and the relationship between the blade structure and noise is not considered. The life of the blade as a wear part is a major concern. In addition, the noise generated during the high-speed operation of the blade is closely related to the structural parameters of the blade. Moreover, the reasonable design of the blade structure is also needed to ensure that the steel shots fly out of the tail of the blade smoothly to obtain the highest speed.
Chinese patent document CN201120356413.5 discloses a blade for a shot blasting machine, which is characterized in that vertical blade flanges are left on two side edges of a straight blade, so that one side of the blade can be taken down after being worn and failed and the other side can be replaced as a working surface for continuous use, thereby achieving the purposes of high utilization rate and prolonged service life. In fact, the abrasion failure of the blade is often generated at the tail end of the blade and is represented as serious deformation of the blade and a pit; when the impeller head is used on the other side, the unbalance degree of the whole impeller of the impeller head is greatly improved, the whole service life of the impeller head is shortened, and the failure of an impeller disc is aggravated. In addition, the steel shots bounce back and forth between the blades, the speed direction of the steel shots is easily changed by adding the flange on the back of the blades, the collision between the steel shots and between the steel shots and the blades is aggravated, the service life of the blades is shortened, and the throwing speed of the steel shots is influenced.
Disclosure of Invention
The invention aims to provide a curved surface blade of a shot blasting machine, aiming at the defects and shortcomings of the prior art, and the curved surface blade is beneficial to air circulation, is not easy to generate vortex, further causes air pressure pulsation and reduces noise.
In order to achieve the purpose, the invention adopts the following technical scheme: the blade comprises a blade body, wherein one side surface of the blade body is a working surface, the other side surface opposite to the working surface is a non-working surface, the working surface and the non-working surface are both in arc surface structures, and the circle center of the non-working surface is positioned above the right side of the circle center of the working surface; the upper side and the lower side of the working surface are respectively provided with an upper brim and a lower brim, the tail part of the upper brim is provided with an upper sharp corner, and the tail part of the lower brim is provided with a lower sharp corner.
Preferably, the distance between the head left end point and the head right end point of the blade body is 13-15mm, the head left end point and the head right end point are both arranged on a circle with the radius of 63-65mm, and the head left end point and the head right end point are symmetrically arranged relative to a first vertical central line passing through the center of the circle with the radius of 63-65 mm.
Preferably, the distance between the tail left end point and the tail right end point of the blade body is 17.5-19.5mm, the two ends are located on a circle with the radius of 189-191mm, and the center of the circle with the radius of 189-191mm is overlapped with the center of the circle with the radius of 63-65 mm.
Preferably, the right end point of the head is positioned on a second vertical central line which is positioned at the right side of the first vertical central line and is 6.5-7.5mm away.
Preferably, the arc surface of the working surface is tangent to the second vertical center line.
Preferably, the radius of curvature of the working surface is 202 and 203 mm.
Preferably, the radius of curvature of the non-working surface is 208-209 mm.
Preferably, the horizontal distance between the first vertical center line and the center of the non-working surface is 406 and 408 mm.
Preferably, the upper brim is of an arc surface structure, the curvature radius of the outer edge of the upper brim is 399 and 401mm, the circle center of the arc surface structure of the upper brim is overlapped with the circle center of the working surface, and the thickness of the upper brim is 2-3 mm.
Preferably, the lower brim is a part formed by a connecting line between two end points of the outer edge of the head and the tail of the bottom surface of the blade body and the working surface, and the thickness of the lower brim is 2-3 mm.
Preferably, the upper side closed angle and the lower side closed angle are arranged on the same vertical plane, and the included angle between the inclined edge where the upper side closed angle is located and the transverse edge of the upper side tail part of the blade body is 120 degrees.
The working surface and the non-working surface of the arc surface structure of the non-concentric circles are adopted, so that the steel shot bearing performance of the blade body is better, the noise of the curved surface structure is lower compared with that of a straight blade structure, the thickness of the blade body is gradually changed from the head to the tail, and the service life of the blade body is prolonged; the arrangement of the upper brim and the lower brim greatly reduces the derailing rate of the steel shots, and the overall throwing speed of the steel shots is improved; the setting of upside closed angle and downside closed angle more is favorable to the circulation of air, is difficult to produce the vortex and then the air pressure pulsation that arouses, and the performance result is noise reduction.
Compared with the prior art, the invention has the beneficial effects that:
1. the working surface and the non-working surface of the arc surface structure of the non-concentric circles are adopted, so that the steel shot bearing performance of the blade body is better, the noise of the curved surface structure is lower compared with that of a straight blade structure, the thickness of the blade body is gradually changed from the head to the tail, and the service life of the blade body is prolonged;
2. the arrangement of the upper brim and the lower brim greatly reduces the derailing rate of the steel shots, and the overall throwing speed of the steel shots is improved;
3. the setting of upside closed angle and downside closed angle more is favorable to the circulation of air, is difficult to produce the vortex and then the air pressure pulsation that arouses, and the performance result is noise reduction.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a top view of the present invention.
Description of reference numerals:
the novel blade cap comprises a blade body 1, a lower-side cap peak 2, a lower-side sharp angle 3, a working surface 4, an upper-side cap peak 5, an upper-side sharp angle 6, a non-working surface 7, a head left end point 8, a head right end point 9, a working surface circle center 10, a non-working surface circle center 11, a tail left end point 12, a tail right end point 13, a second vertical central line 14, a first vertical central line 15, a bevel edge 16 and a transverse edge 17.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings, and the preferred embodiments in the description are only examples, and all other embodiments obtained by those skilled in the art without any inventive work belong to the protection scope of the present invention.
As shown in fig. 1-2, the following technical solutions are adopted in the present embodiment: the blade comprises a blade body 1 with the height of 77-81mm, wherein one side surface of the blade body 1 is a working surface 4, the side surface opposite to the working surface 4 is a non-working surface 7, the working surface 4 and the non-working surface 7 are both in arc surface structures, and the circle center 11 of the non-working surface 7 is positioned above the right side of the circle center 10 of the working surface 4; the upper side edge and the lower side edge of the working surface 4 are respectively provided with an upper brim 5 and a lower brim 2, the tail part of the upper brim 5 is provided with an upper sharp corner 6, and the tail part of the lower brim 2 is provided with a lower sharp corner 3; the distance between the head left end point 8 and the head right end point 9 of the blade body 1 is 13-15mm, the head left end point 8 and the head right end point 9 are both positioned on a circle with the radius of 63-65mm, and the head left end point 8 and the head right end point 9 are symmetrically arranged relative to a first vertical center line 15 passing through the center of the circle with the radius of 63-65 mm; the distance between the tail left end point 12 and the tail right end point 13 of the blade body 1 is 17.5-19.5mm, the two points are both positioned on a circle with the radius of 189-191mm, and the circle center of the circle with the radius of 189-191mm is superposed with the circle center of the circle with the radius of 63-65 mm; the head right end point 9 is positioned on a second vertical center line 14, and the second vertical center line 14 is positioned on the right side of the first vertical center line 15 and is 6.5-7.5mm away from the first vertical center line; the arc surface of the working surface 4 is tangent to the second vertical center line 14; the curvature radius of the working surface 4 is 202-203 mm; the curvature radius of the non-working surface 7 is 208-209 mm; the horizontal distance between the first vertical center line 15 and the non-working surface circle center 11 is 406 and 408 mm; the upper brim 5 is of an arc surface structure, the curvature radius of the outer edge of the upper brim is 399 and 401mm, the circle center of the arc surface structure of the upper brim 5 is superposed with the circle center 10 of the working surface, and the thickness of the upper brim 5 is 2-3 mm; the lower brim 2 is a part formed by a connecting line between two end points of the outer edges of the head and the tail of the bottom surface of the blade body 1 and the working surface 4, and the thickness of the lower brim 2 is 2-3 mm; the upper sharp corner 6 and the lower sharp corner 3 are arranged on the same vertical plane, and the included angle between the inclined edge 16 of the upper sharp corner 6 and the transverse edge 17 of the upper tail part of the blade body 1 is 120 degrees.
The 6-8 blade bodies 1 are arranged on an impeller disc, and the working surface 4 and the non-working surface 7 of the arc surface structure of the non-concentric circle are adopted, so that the performance of the blade body 1 for bearing steel shots is better, the noise of the curved surface structure is lower compared with that of a straight blade structure, the thickness of the blade body 1 is gradually changed from the head to the tail, and the service life of the blade body 1 is prolonged; the arrangement of the upper brim 5 and the lower brim 2 greatly reduces the derailing rate of the steel shots, and improves the overall throwing speed of the steel shots; the arrangement of the upper sharp corner 6 and the lower sharp corner 3 is more favorable for air circulation, and is not easy to generate vortex and further cause air pressure pulsation, and the performance result is noise reduction.
Compared with the prior art, the beneficial effects of the embodiment are as follows:
1. the working surface and the non-working surface of the arc surface structure of the non-concentric circles are adopted, so that the steel shot bearing performance of the blade body is better, the noise of the curved surface structure is lower compared with that of a straight blade structure, the thickness of the blade body is gradually changed from the head to the tail, and the service life of the blade body is prolonged;
2. the arrangement of the upper brim and the lower brim greatly reduces the derailing rate of the steel shots, and the overall throwing speed of the steel shots is improved;
3. the setting of upside closed angle and downside closed angle more is favorable to the circulation of air, is difficult to produce the vortex and then the air pressure pulsation that arouses, and the performance result is noise reduction.
It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.
Claims (10)
1. The utility model provides a shot-blasting machine curved surface blade which characterized in that: the blade comprises a blade body (1), wherein one side surface of the blade body (1) is a working surface (4), the side surface opposite to the working surface (4) is a non-working surface (7), the working surface (4) and the non-working surface (7) are both in arc surface structures, and the circle center (11) of the non-working surface (7) is positioned above the right side of the circle center (10) of the working surface (4); the upper side and the lower side of the working surface (4) are respectively provided with an upper brim (5) and a lower brim (2), the tail part of the upper brim (5) is provided with an upper sharp corner (6), and the tail part of the lower brim (2) is provided with a lower sharp corner (3).
2. The curved blade of the shot blasting machine as recited in claim 1, wherein: the distance between the head left end point (8) and the head right end point (9) of the blade body (1) is 13-15mm, the head left end point (8) and the head right end point (9) are located on a circle with the radius of 63-65mm, and the head left end point (8) and the head right end point (9) are symmetrically arranged relative to a first vertical center line (15) where the center of the circle with the radius of 63-65mm is located.
3. The curved blade of the shot blasting machine as recited in claim 2, wherein: the distance between the tail left end point (12) and the tail right end point (13) of the blade body (1) is 17.5-19.5mm, the two ends are located on a circle with the radius of 189-191mm, and the circle center of the circle with the radius of 189-191mm is superposed with the circle center of the circle with the radius of 63-65 mm.
4. The curved blade of the shot blasting machine as recited in claim 2, wherein: the right end point (9) of the head is positioned on a second vertical central line (14), and the second vertical central line (14) is positioned on the right side of the first vertical central line (15) and is 6.5-7.5mm away; the arc surface of the working surface (4) is tangent to the second vertical central line (14).
5. The curved blade of the shot blasting machine as recited in claim 1, wherein: the curvature radius of the working surface (4) is 202-203 mm.
6. The curved blade of the shot blasting machine as recited in claim 1, wherein: the curvature radius of the non-working surface (7) is 208-209 mm.
7. The curved blade of the shot blasting machine as recited in claim 2, wherein: the horizontal distance between the first vertical center line (15) and the center (11) of the non-working surface is 406 mm and 408 mm.
8. The curved blade of the shot blasting machine as recited in claim 1, wherein: the upper brim (5) is of an arc surface structure, the curvature radius of the outer edge of the upper brim is 399 and 401mm, the circle center of the arc surface structure of the upper brim (5) is superposed with the circle center (10) of the working surface, and the thickness of the upper brim (5) is 2-3 mm.
9. The curved blade of the shot blasting machine as recited in claim 1, wherein: the lower brim (2) is a part formed by a connecting line between two end points of the outer edges of the head part and the tail part of the bottom surface of the blade body (1) and the working surface (4), and the thickness of the lower brim (2) is 2-3 mm.
10. The curved blade of the shot blasting machine as recited in claim 1, wherein: the upper side closed angle (6) and the lower side closed angle (3) are arranged on the same vertical plane, and the included angle between the inclined edge (16) where the upper side closed angle (6) is located and the transverse edge (17) at the upper side tail part of the blade body (1) is 120 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210078105.3A CN114536228A (en) | 2022-01-24 | 2022-01-24 | Curved surface blade of shot blasting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210078105.3A CN114536228A (en) | 2022-01-24 | 2022-01-24 | Curved surface blade of shot blasting machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114536228A true CN114536228A (en) | 2022-05-27 |
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ID=81672120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210078105.3A Pending CN114536228A (en) | 2022-01-24 | 2022-01-24 | Curved surface blade of shot blasting machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114536228A (en) |
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2022
- 2022-01-24 CN CN202210078105.3A patent/CN114536228A/en active Pending
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