US20210069862A1

US20210069862A1 - Impeller structure and projection equipment

Info

Publication number: US20210069862A1
Application number: US16/939,860
Authority: US
Inventors: Tai-an LIAO; Ping-Yuan Liao; Tsai-Ming Kuo
Original assignee: Air Bag Packing Co Ltd
Current assignee: Kunshan Airbag Packing Corp
Priority date: 2019-09-11
Filing date: 2020-07-27
Publication date: 2021-03-11
Also published as: TW202110583A; DE102020118754A1; TWI758637B

Abstract

An impeller structure including two rotating discs, connecting components, and high-speed blades is provided. Each rotating discs includes a hole, locking holes, and snap-in slots. The snap-in slot includes an outer slot and a limit slot. The connecting component connected to the rotating discs through the locking holes. The high-speed blade includes a body and protrusions. The body includes two lateral walls. The high-speed blades are disposed between the rotating discs. Under high-speed rotation, the high-speed blade moves toward an outer edge of the rotating disc due to a centrifugal force. The lateral wall of the body is snapped into the snap-in slot and tightly fitted in the outer slot. The protrusion is snapped into the limit slot and restricts displacement of the protrusion. The impeller structure is easy to disassemble and assemble, and can withstand high rotating speeds. Also provided is a projection equipment with the impeller structure.

Description

CROSS-REFERENCE TO RELATED APPLICATION

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.

BACKGROUND

Technical Field

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.

Related Art

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.

SUMMARY

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.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of an appearance of an embodiment of a high-speed blade according to the present invention.

FIG. 2 is a schematic exploded view of an embodiment of an impeller structure according to the present invention.

FIG. 3 is a schematic assembly diagram of an embodiment of an impeller structure according to the present invention.

FIG. 4 is a schematic diagram of an appearance of an embodiment of a projection equipment according to the present invention.

DETAILED DESCRIPTION

FIG. 1 is a schematic diagram of an appearance of an embodiment of a high-speed blade 121 according to the present invention.
The high-speed blade 121 includes a body 1211 and protrusions 1212. The body 1211 includes a first end wall 1211 a, two lateral walls 1211 c, and a second end wall 1211 b, the first end wall 1211 a being separated from the first end wall 1211 a by the two lateral walls 1211 c, two opposite catching and tossing slots 1213 being disposed in the first end wall 1211 a, the two lateral walls 1211 c, and the second end wall 1211 b, a bottom surface of each of the catching and tossing slots 1213 being a catching and tossing surface 1213 a. The catching and tossing surface 1213 a 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 1211 c, and close to the first end wall 1211 a. 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 1211 c in a locking manner. In addition, in this embodiment, an outer peripheral surface of each of the protrusions 1212 includes a bottom surface 1212 b, two side surfaces 1212 c, and a top surface 1212 a, the bottom surface 1212 b being flush with the first end wall 1211 a, the top surface 1212 a being a first circumferential surface, and a distance between the two side surfaces 1212 c is shorter than a distance between the two lateral walls 1211 c.
In addition, in this embodiment, a distance L1 between the lateral walls 1211 c is gradually shortened by extending from the first end wall 1211 a to the second end wall 1211 b. 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 1213 a close to the second end wall 1211 b is raised.
In addition, in this embodiment, the catching and tossing surface 1213 a extends from the second end wall 1211 b to the first end wall 1211 a 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 1213 a and strength of the casting force, and is not limited in the present invention.
In addition, in this embodiment, each of the lateral walls 1211 c 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 1211 a to the second end wall 1211 b. 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.
FIG. 2 and FIG. 3 are a schematic exploded view and a schematic assembly diagram of an embodiment of an impeller structure 12 according to the present invention. The impeller structure 12 includes two rotating discs 122, a plurality of connecting components 123, and a plurality of high-speed blades 121 as described above.
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 1213 a, 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 1223 a and a limit slot 1223 b, the limit slot 1223 b being located in the outer slot 1223 a, 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 1211 c 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 1223 b.
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 1211 c of the body 1211 is tightly fitted in the outer slot 1223 a of the snap-in slot 1223. The protrusion 1212 is disposed in the limit slot 1223 b and the limit slot 1223 b 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 1212 a of the corresponding protrusion 1212 is a first circumferential surface, and the limit wall 12232 of each of the limit slots 1223 b is a second circumferential surface.
FIG. 4 is a schematic diagram of an appearance of an embodiment of a projection equipment 100 according to the present invention. The projection equipment 100 includes a feeding device 2, a projection device 1, and a power rotating device 3. The feeding device 2 includes a receiving port 21 that can receive sand particles.
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 1213 a 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.

Claims

What is claimed is:

1. An impeller structure, comprising:

two rotating discs, each of the two rotating discs comprising 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, wherein each of the snap-in slots is in communication with the hole and extends to an outer edge of the rotating disc, and comprises 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 comprising two side walls and a limit wall, two sides of the limit wall being respectively connected to the side walls;

a plurality of connecting components, two ends of each of the connecting components being respectively connected to the rotating discs through the locking holes; and

a plurality of high-speed blades, each of the high-speed blades comprising:

a body comprising 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; and

two protrusions disposed on two sides of the body, respectively connected to each of the lateral walls, and close to the first end wall, wherein

each of the high-speed blades is disposed between the rotating discs, 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; and

at a rotation speed, the high-speed blade moves toward the outer edge of the rotating disc due to a centrifugal force, so that the lateral wall is tightly fitted in the outer slot, and the limit slot restricts displacement of the protrusion.

2. The impeller structure according to claim 1, wherein a distance between the lateral walls of the high-speed blade is gradually shortened by extending from the first end wall to the second end wall.

3. The impeller structure according to claim 1, wherein the catching and tossing surface of the high-speed blade extends from the second end wall to the first end wall at an inclined angle.

4. The impeller structure according to claim 1, wherein each of the lateral walls of the high-speed blade comprises 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.

5. The impeller structure according to claim 1, wherein an outer peripheral surface of each of the protrusions of the high-speed blade comprises 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 side surfaces is shorter than a distance between the lateral walls.

6. The impeller structure according to claim 1, wherein 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.

7. The impeller structure according to claim 1, wherein one side wall of each of the snap-in slots comprises 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.

8. The impeller structure according to claim 1, wherein the limit wall of each of the limit slots is a second circumferential surface.

9. A projection equipment, comprising:

a feeding device comprising a receiving port;

a projection device in communication with the feeding device and comprising:

the impeller structure according to claim 1; and

a rotating shaft component comprising a discharge port, two ends of the rotating shaft component being respectively disposed in the hole; and

a power rotating device comprising a driving shaft, the driving shaft being connected to the rotating shaft component of the impeller structure to drive the impeller structure to rotate.