Patent Application
20210069862
This non-provisional application claims priority under 35 U.S.C. § 119(a) to Patent Application No. 108132879 filed in Taiwan, R.O.C. on Sep. 11, 2019, the entire contents of which are hereby incorporated by reference.
An impeller structure is provided, including blades suitable for high-speed sandblasting. The present invention further relates to a projection equipment including the impeller structure.
Sandblasting is a destructive processing method for a material surface. Small abrasive sand particles are used to impact the material surface, so that the material surface produces a particle-like depression to form a matte surface or an eroded surface, thereby achieving the effects of removing gold rust and oxide layers, beautification, atomization, extinction, and the like, and can improve a finish of the material surface. Therefore, sandblasting is widely used.
In order to achieve the above purpose, an impact speed and force of the sand particles on the material surface are very important. Generally, sands are cast by the impeller structure, but a traditional impeller structure has a limited rotation speed, and cannot achieve a full finish on the material surface. In addition, the impeller structure is not easy to disassemble and disassemble, and it takes time to replace the blades.
Therefore, an embodiment of the present invention provides a high-speed blade including a body and protrusions. The body includes a first end wall, two lateral walls, and a second end wall, the first end wall being separated from the first end wall by the two lateral walls, two opposite catching and tossing slots being disposed in the first end wall, the two lateral walls, and the second end wall, a bottom surface of each of the catching and tossing slots being a catching and tossing surface.
Two protrusions are respectively disposed on two sides of the body, respectively connected to each of the lateral walls, and close to the first end wall.
In an embodiment of the high-speed blade as described above, a distance between the lateral walls is gradually shortened by extending from the first end wall to the second end wall.
In an embodiment of the high-speed blade as described above, the catching and tossing surface extends from the second end wall to the first end wall at an inclined angle.
In an embodiment of the high-speed blade as described above, each of the lateral walls includes an upper edge and an opposite lower edge, a distance between the upper edge and the lower edge being gradually shortened by extending from the first end wall to the second end wall.
In an embodiment of the high-speed blade as described above, an outer peripheral surface of each of the protrusions includes a bottom surface, two side surfaces, and a top surface, the bottom surface being flush with the first end wall, the top surface being a first circumferential surface, and a distance between the two side surfaces is shorter than a distance between the two lateral walls.
The present invention further provides an impeller structure according to an embodiment, including two rotating discs, a plurality of connecting components, and a plurality of high-speed blades as described above.
Each of the rotating discs includes one hole, a plurality of locking holes, and a plurality of snap-in slots, the hole being located in a center of the rotating disc, the locking holes and the snap-in slots being located outside the hole, and the locking holes and the snap-in slots being alternately disposed by using the hole as a centre of symmetry, where each of the snap-in slots is in communication with the hole and extends to an outer edge of the rotating disc, and includes an outer slot and a limit slot, the limit slot being located in the outer slot, being in communication with the hole and extending toward the outer edge of the rotating disc, and including two side walls and a limit wall, two sides of the limit wall being respectively connected to the side walls. Two ends of each of the connecting components are respectively connected to the rotating discs through the locking holes. The plurality of high-speed blades are disposed between the rotating discs, where the lateral wall of each of the high-speed blades is snapped into the snap-in slot, and the protrusion is snapped into the limit slot.
In an embodiment of the impeller structure as described above, a distance between two side walls of each of the snap-in slots is gradually shortened by extending from the hole to the outer edge of the rotating disc.
In an embodiment of the impeller structure as described above, one side wall of each of the snap-in slots includes a top edge and a bottom edge, a distance between the top edge and the bottom edge being gradually shortened by extending from an outer edge of the hole to the outer edge of the rotating disc.
In an embodiment of the impeller structure as described above, the limit wall of each of the limit slots is a second circumferential surface.
The present invention further provides a projection equipment according to an embodiment, including a feeding device, a projection device, and a power rotating device. The feeding device includes a receiving port. The projection device is in communication with the feeding device and includes a rotating shaft component and the impeller structure as described above, two ends of the rotating shaft component being respectively disposed in the hole, and the rotating shaft component including a discharge port. The power rotating device includes a driving shaft connected to the rotating shaft component of the impeller structure to drive the impeller structure to rotate.
According to the foregoing one or more embodiments, the high-speed blades have a simple structure and high strength. The high-speed blades are easy to use in combination with the turntables. The impeller structure is easy to assemble and disassemble, and can withstand a rotating speed range of 5000 rpm to 40000 rpm, which has variable frequency. In comparison with a traditional impeller structure, the speed is effectively increased, and the effect of sandblasting is more obvious and efficient.
In addition, the present invention further provides a projection equipment using the above-mentioned high-speed blade and impeller structure according to an embodiment, and the projection equipment can be widely used in industries and fields that require sandblasting.
The high-speed blade 121 includes a body 1211 and protrusions 1212. The body 1211 includes a first end wall 1211a, two lateral walls 1211c, and a second end wall 1211b, the first end wall 1211a being separated from the first end wall 1211a by the two lateral walls 1211c, two opposite catching and tossing slots 1213 being disposed in the first end wall 1211a, the two lateral walls 1211c, and the second end wall 1211b, a bottom surface of each of the catching and tossing slots 1213 being a catching and tossing surface 1213a. The catching and tossing surface 1213a is used as a receiving surface of sand particles and the sand particles are cast onto a material surface through centrifugal force during rotation to achieve the effects of removing gold rust and oxide layers, beautification, atomization, extinction, and the like.
Two protrusions 1212 are respectively disposed on two sides of the body 1211, respectively connected to each of the lateral walls 1211c, and close to the first end wall 1211a. In this embodiment, the protrusions 1212 and the body 1211 are an integrated structure. In some embodiments, the protrusions 1212 are respectively connected to each of the lateral walls 1211c in a locking manner. In addition, in this embodiment, an outer peripheral surface of each of the protrusions 1212 includes a bottom surface 1212b, two side surfaces 1212c, and a top surface 1212a, the bottom surface 1212b being flush with the first end wall 1211a, the top surface 1212a being a first circumferential surface, and a distance between the two side surfaces 1212c is shorter than a distance between the two lateral walls 1211c.
In addition, in this embodiment, a distance L1 between the lateral walls 1211c is gradually shortened by extending from the first end wall 1211a to the second end wall 1211b. However, the present invention does not limit a proportion and a size of the gradually shortened distance. In this structure, force of casting sand particles during rotation a portion of the catching and tossing surface 1213a close to the second end wall 1211b is raised.
In addition, in this embodiment, the catching and tossing surface 1213a extends from the second end wall 1211b to the first end wall 1211a at an inclined angle α. A size of the inclined angle α is related to the number of sand particles that can be received by the catching and tossing surface 1213a and strength of the casting force, and is not limited in the present invention.
In addition, in this embodiment, each of the lateral walls 1211c includes an upper edge and an opposite lower edge, a distance L2 between the upper edge and the lower edge being gradually shortened by extending from the first end wall 1211a to the second end wall 1211b. As mentioned above, the present invention does not limit a proportion and a size of the gradually shortened distance.
In some embodiments, a material of the high-speed blade 121 is made of alloy steel, but the present invention does not limit the material. In some embodiments, the high-speed blade 121 may be made of other metal materials or alloys.
Each of the two rotating discs 122 includes one hole 1221, a plurality of locking holes 1222, and a plurality of snap-in slots 1223, the hole 1221 being located in a center of the rotating disc 122. The hole 1221 may be provided with a rotating component for storing sand particles, such as a barrel slot, and has a discharge port 1241 for discharging received sand particles onto the catching and tossing surface 1213a, as described in detail below.
The locking holes 1222 and the snap-in slots 1223 are located outside the hole 1221, and the locking holes 1222 and the snap-in slots 1223 are alternately disposed by using the hole 1221 as a centre of symmetry.
Each of the snap-in slots 1223 is in communication with the hole 1221 and extends to an outer edge of the rotating disc 122, and includes an outer slot 1223a and a limit slot 1223b, the limit slot 1223b being located in the outer slot 1223a, being in communication with the hole 1221 and extending toward the outer edge of the rotating disc 122, and including two side walls 12231 and a limit wall 12232, two sides of the limit wall 12232 being respectively connected to the side walls 12231.
Two ends of each of the connecting components 123 are respectively connected to the rotating discs 122 through the locking holes 1222. The plurality of high-speed blades 121 are disposed between the rotating discs 122, where the lateral wall 1211c of each of the high-speed blades 121 is snapped into the snap-in slot 1223, and the protrusion 1212 is snapped into the limit slot 1223b.
In other words, a structure of the snap-in slot 1223 corresponds to a structure of the high-speed blade 121, and the high-speed blade 121 is mounted in the snap-in slot 1223 in a snap-fit manner. When the turntable 122 rotates, due to high-speed rotation, the high-speed blade 121 moves toward the outer edge of the turntable 122 due to a centrifugal force. The lateral wall 1211c of the body 1211 is tightly fitted in the outer slot 1223a of the snap-in slot 1223. The protrusion 1212 is disposed in the limit slot 1223b and the limit slot 1223b can restrict displacement of the protrusion 1212.
The impeller structure 12 described above can withstand high rotating speeds. In comparison with a general projection structure, the speed and impact force of sandblasting are improved, and the effect of sandblasting is more obvious.
In these embodiments, the structure of the snap-in slot 1223 corresponds to the structure of the high-speed blade 121. For example, a distance L3 between two side walls of each of the snap-in slots 1223 is gradually shortened by extending from the hole 1221 to the outer edge of the rotating disc. However, the present invention does not limit a proportion or a specified size of the shortened distance. A side wall of each of the snap-in slots 1223 includes a top edge and a bottom edge, a distance between the top edge and the bottom edge being gradually shortened by extending from an outer edge of the hole 1221 to the outer edge of the rotating disc 122. In addition, the top surface 1212a of the corresponding protrusion 1212 is a first circumferential surface, and the limit wall 12232 of each of the limit slots 1223b is a second circumferential surface.
The projection device 1 is in communication with the feeding device 2. The projection device 1 includes a housing 11 and an impeller structure 12, the impeller structure 12 being disposed in the housing 11. In some embodiments, the projection device 1 is externally mounted, and there is no housing 11. The housing 11 is mounted to effectively recover the sand particles and avoid environmental pollution.
The housing 11 includes an injection port 14 configured to receive the discharged sand particles when the catching and tossing surface 1213a rotates to pass through the discharge port 1241 and cast the sand particles out of the housing 11 through the injection port 14 due to a centrifugal force, so that the sand particles hit a material surface. In this embodiment, a rotating shaft component 124 includes an inner cylinder 1243 and an outer cylinder 1242. The inner cylinder 1243 is in communication with the receiving port 21, and a plurality of openings are further disposed in the inner cylinder 1243 at intervals to help discharge the sand particles.
The power rotating device 3 includes a driving shaft 31 connected to the rotating shaft component 124 of the impeller structure 12 to drive the impeller structure 12 to rotate. In an embodiment, the power rotating device 3 is a motor.
The projection device 100 may be disposed in different orientations in a system according to processing directions of the material surface, for example, mounted in a longitudinal orientation or in a lateral orientation. In other words, the projection device 100 in the present invention does not limit the processing direction of the material surface, and adopts different settings depending on the needs of the industry.
According to the foregoing one or more embodiments, the high-speed blades have a simple structure and high strength. The high-speed blades are easy to use in combination with the turntables. The impeller structure is easy to assemble and disassemble, and can withstand a rotating speed range of 4000 rpm to 50000 rpm, which has variable frequency. In comparison with a traditional impeller structure, the speed is effectively increased, the effect of sandblasting is more obvious and efficient, and problems encountered in the prior art are resolved.
In addition, the present invention further provides a projection equipment using the above-mentioned high-speed blade and impeller structure according to an embodiment, and the projection equipment can be widely used in industries and fields that require sandblasting.
| Number | Date | Country | Kind |
|---|---|---|---|
| 108132879 | Sep 2019 | TW | national |
