CN113264379B - Power element of powder conveying device and processing method thereof - Google Patents
Power element of powder conveying device and processing method thereof Download PDFInfo
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- CN113264379B CN113264379B CN202110815330.6A CN202110815330A CN113264379B CN 113264379 B CN113264379 B CN 113264379B CN 202110815330 A CN202110815330 A CN 202110815330A CN 113264379 B CN113264379 B CN 113264379B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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Abstract
The invention belongs to the technical field of production and manufacture of fluid conveying devices, and particularly relates to a power element of a powder conveying device and a processing method thereof. According to the invention, the blades of the power element of the powder conveying device are arranged into two parts, wherein one part is fixedly connected with the front disc and the rear disc, and the other part is movably connected with the front disc and the rear disc to adjust the inclination angle of the blades, so that the through-flow performance of the impeller can be adjusted according to the characteristics of different materials, and the fan can be ensured to operate in a more preferable state when conveying different materials.
Description
Technical Field
The invention belongs to the technical field of production and manufacturing of fluid conveying devices, and particularly relates to a power element of a powder conveying device and a processing method thereof.
Background
The material passing fan is particle material conveying equipment, in the operation process of the material passing fan, particle materials need to pass through a power element cavity of the powder conveying device, the power element of the powder conveying device mainly comprises a front disc, a rear disc and blades, when the materials pass through the fan, the windward surfaces of the blades are abraded seriously one by one, the leeward surfaces can adsorb the materials, and the work efficiency of the impeller can be influenced when the materials are accumulated on the leeward surfaces of the blades. The inclination angle of blade not only can influence the air supply efficiency of impeller, but also can influence the material in the adsorption efficiency of blade leeward side and the holistic noise condition of fan, consequently need change the blade inclination to the material of different properties in actual production process to avoid the material to pile up, reduce equipment noise when guaranteeing best work efficiency. However, the impeller blades in the prior art are generally of a fixed structure, and a plurality of fans are required to switch operation when different materials are conveyed, so that the production cost is increased; in addition, in the prior art, an impeller mechanism with adjustable blade angles is arranged, but the adjusting process is too complex, the impeller is usually required to be detached from the fan and then each blade is independently adjusted, and the production efficiency is seriously influenced.
Disclosure of Invention
The invention aims to provide a power element of a powder conveying device capable of adapting to conveying of different materials and a processing method thereof.
The technical scheme adopted by the invention is as follows:
the utility model provides a powder conveyor's power component, includes the front bezel and the back plate that parallel interval set up to and along a plurality of blades that the even interval of circumference set up between front bezel and the back plate, each blade is vortex form and distributes, the blade includes fixed part and movable part, and wherein the fixed part is located the one end that the blade is close to the impeller center, and the movable part is located the one end that the impeller center was kept away from to the blade, fixed part and front bezel and back plate rigid coupling, movable part and front bezel and back plate pivot and pivot are located the one end of neighbouring fixed part on the movable part, be equipped with angle adjustment mechanism on the back plate and be used for adjusting the relative contained angle of movable part and fixed part.
The rear disc and the impeller spindle form a plug-in fit, the impeller spindle extends to a position between the front disc and the rear disc in a protruding mode, a rotary portion is arranged at the end portion of the impeller spindle and is connected with the impeller spindle in a relatively rotating mode, the rotary portion is connected with an angle adjusting mechanism on the rear disc in a transmission mode through a transmission mechanism, and the transmission mechanism is assembled to be capable of driving the movable portion to swing when the rotary portion rotates relative to the impeller spindle.
The angle adjusting mechanism comprises a pin shaft arranged on the movable part, the pin shaft and an arc-shaped hole formed in the rear disc form sliding fit, a driving disc is arranged on one side, facing back, of the rear disc and the blades, a waist-shaped hole arranged along the radial direction of the impeller is formed in the driving disc, and the pin shaft and the waist-shaped hole form sliding fit; the driving disk is in relative rotation fit with the rear disk.
The transmission mechanism comprises a central gear arranged on the rotary part and a first planetary gear arranged on the impeller main shaft along the circumferential direction of the central gear, the first planetary gear is rotationally connected with the impeller main shaft, and the first planetary gear is meshed with the central gear; the transmission mechanism comprises a transition disc which is in relative rotation connection with the rear disc, the inner and outer annular surfaces of the transition disc are respectively provided with a first inner gear ring and an outer gear ring, and the first planetary gear is meshed with the first inner gear ring; and a second planetary gear is arranged on the rear disc along the circumferential direction of the transition disc, the second planetary gear is rotationally connected with the rear disc, a second inner gear ring is arranged on the inner annular surface of the driving disc, the inner side of the second planetary gear is meshed with the outer gear ring of the transition disc, and the outer side of the second planetary gear is meshed with the second inner gear ring of the driving disc.
And a locking mechanism for keeping the rotating part at any angle is arranged between the rotating part and the main shaft.
The locking mechanism comprises a threaded hole arranged at the end part of the main shaft of the impeller, a first nut is arranged in the threaded hole, a square hole is arranged on the first nut, a square shaft is arranged on the rotary part, the square shaft is inserted into the square hole and forms sliding fit with the square hole along the circumferential direction, a pressure spring is arranged between the first nut and the main shaft of the impeller, and the pressure spring is assembled to enable the elastic force of the pressure spring acting on the first nut to point to the outer side of the threaded hole; and a second nut is further arranged in the threaded hole, and the inner end of the second nut is abutted against the outer end of the first nut and used for locking the first nut.
The movable portion is provided with a wind shield, the wind shield is attached to the rear disc, and the wind shield can always completely cover the arc-shaped hole when the wind shield is assembled to swing to any angle.
The edge of one side of the back plate, which is back to the back of the blades, is provided with a plurality of auxiliary blades, each auxiliary blade is uniformly arranged along the circumference of the back plate at intervals, each auxiliary blade is arranged in a vortex shape, and the auxiliary blades can generate airflow along the radial direction of the impeller when the impeller is in a normal working state.
The wind-driven generator is characterized by further comprising a lining piece made of ceramic materials, wherein the lining piece comprises an end plate attached to the rear disc and ceramic blades arranged along the circumferential direction of the end plate at uniform intervals, and each ceramic blade is attached to the windward side of each fixing part.
A processing method of a power element of the powder conveying device comprises the steps of firstly, cutting a front disc, a rear disc and blades on a steel plate by a laser cutting machine, installing a pivot on a movable part of each blade, welding the fixed parts of the front disc, the rear disc and the blades into a whole, and installing the movable part of each blade between the front disc and the rear disc; and finally, an angle adjusting mechanism is arranged on the rear disc.
The invention has the technical effects that:
according to the invention, the blades of the power element of the powder conveying device are arranged into two parts, wherein one part is fixedly connected with the front disc and the rear disc, and the other part is movably connected with the front disc and the rear disc to adjust the inclination angle of the blades, so that the through-flow performance of the impeller can be adjusted according to the characteristics of different materials, and the fan can be ensured to operate in a more preferable state when conveying different materials;
according to the invention, the mechanism for adjusting the blade angle is arranged on the main shaft, when the blade inclination angle needs to be adjusted, the power element does not need to be detached from the main shaft, and only the side plate of the conveying device needs to be detached, and then the blade angle can be directly adjusted from the air inlet of the power element, so that the operation process is simplified, and the working efficiency is improved;
the invention adopts two groups of planetary reduction gears to transmit the power of the rotary part to the driving disc, so that an operator can adjust the inclination angle of each blade in a labor-saving way.
Drawings
FIG. 1 is a perspective view of a power element of a powder delivery device provided by an embodiment of the present invention;
FIG. 2 is a perspective view of another perspective of a power element of a powder delivery device provided by an embodiment of the present invention;
FIG. 3 is a front view of the power element of the powder delivery device provided by an embodiment of the present invention;
FIG. 4 is a cross-sectional view A-A of FIG. 3;
FIG. 5 is an exploded view of the power element of the powder delivery apparatus provided by an embodiment of the present invention;
fig. 6 is an exploded view of a spindle provided by an embodiment of the present invention.
Detailed Description
In order that the objects and advantages of the invention will be more clearly understood, the following description is given in conjunction with the accompanying examples. It is to be understood that the following text is merely illustrative of one or more specific embodiments of the invention and does not strictly limit the scope of the invention as specifically claimed.
Example 1
As shown in fig. 1 to 6, a power element of a powder conveying device includes a front disk 10 and a rear disk 20 arranged in parallel at an interval, and a plurality of blades 30 arranged between the front disk 10 and the rear disk 20 at an interval along a circumferential direction, each blade 30 is distributed in a vortex shape, the blade 30 includes a fixed portion 31 and a movable portion 32, wherein the fixed portion 31 is located at one end of the blade 30 close to a center of an impeller, the movable portion 32 is located at one end of the blade 30 far away from the center of the impeller, the fixed portion 31 is fixedly connected to the front disk 10 and the rear disk 20, the movable portion 32 is pivotally connected to the front disk 10 and the rear disk 20, and a pivot is located at one end of the movable portion 32 close to the fixed portion 31, and an angle adjusting mechanism is arranged on the rear disk 20 for adjusting a relative included angle between the movable portion 32 and the fixed portion 31. The invention sets the blade 30 of the power element of the powder conveying device into two parts, wherein one part is fixedly connected with the front disk 10 and the rear disk 20, and the other part is movably connected with the front disk 10 and the rear disk 20 to adjust the inclination angle of the blade 30, thereby adjusting the through-flow performance of the power element according to the characteristics of different materials and ensuring that the conveying device can operate in a more preferable state when conveying different materials.
Further, as shown in fig. 2 and 4, the rear disk 20 and the impeller spindle 40 form a plug-in fit, the impeller spindle 40 protrudes between the front disk 10 and the rear disk 20, a rotary part 41 is provided at an end of the impeller spindle 40, the rotary part 41 is connected with the impeller spindle 40 in a relatively rotating manner, the rotary part 41 is connected with an angle adjusting mechanism on the rear disk 20 in a driving manner through a transmission mechanism, and the transmission mechanism is configured to drive the movable part 32 to swing when the rotary part 41 rotates relative to the impeller spindle 40. According to the invention, the mechanism for adjusting the angle of the blade 30 is arranged on the main shaft 40, when the inclination angle of the blade 30 needs to be adjusted, a power element does not need to be detached from the main shaft 40, and only the side plate of the conveying device needs to be detached, so that the angle of the blade 30 can be directly adjusted from the air inlet of the power element, the operation process is simplified, and the working efficiency is improved.
Preferably, the angle adjusting mechanism includes a pin shaft disposed on the movable portion 32, the pin shaft forms a sliding fit with an arc-shaped hole disposed on the rear disc 20, a driving disc 21 is disposed on one side of the rear disc 20 facing away from the blades 30, a waist-shaped hole 211 disposed along the radial direction of the impeller is disposed on the driving disc 21, and the pin shaft forms a sliding fit with the waist-shaped hole 211; the drive disc 21 is in relatively rotating engagement with the rear disc 20. The arc-shaped holes in the rear disc 20 are hidden by the wind deflector 33 and therefore not shown, and the structure thereof can be referred to the structure of the front disc 10 in fig. 1, 3 and 5, and the embodiment shown in the drawings is provided with arc-shaped holes in both the front disc 10 and the rear disc 20.
Preferably, as shown in fig. 2, 4, 5 and 6, the transmission mechanism comprises a central gear 42 arranged on the revolving part 41, and a first planetary gear 43 arranged on the impeller main shaft 40 along the circumference of the central gear 42, wherein the first planetary gear 43 is rotationally connected with the impeller main shaft 40, and the first planetary gear 43 is meshed with the central gear 42; the transmission mechanism comprises a transition disc 23 which is in relative rotation connection with the rear disc 20, the inner and outer annular surfaces of the transition disc 23 are respectively provided with a first inner gear ring and an outer gear ring, and the first planetary gear 43 is meshed with the first inner gear ring; the rear disc 20 is circumferentially provided with a second planetary gear 22 along a transition disc 23, the second planetary gear 22 is rotatably connected with the rear disc 20, the inner annular surface of the driving disc 21 is provided with a second inner gear ring, the inner side of the second planetary gear 22 is meshed with the outer gear ring of the transition disc 23, and the outer side of the second planetary gear is meshed with the second inner gear ring of the driving disc 21. In the embodiment, two groups of planetary speed reducing mechanisms are adopted to transmit the power of the rotating part 41 to the driving disc 21, so that an operator can adjust the inclination angle of each blade 30 in a labor-saving mode, and in addition, the transmission structure can synchronously adjust the angles of all the blades 30, thereby further simplifying the operation process.
Further, as shown in fig. 4 and 6, a lock mechanism for holding the turning part 41 at an arbitrary angle is provided between the turning part 41 and the spindle 40. Specifically, the locking mechanism comprises a threaded hole arranged at the end part of the impeller main shaft 40, a first nut 44 is arranged in the threaded hole, a square hole is arranged on the first nut 44, a square shaft is arranged on the rotary part 41, the square shaft is inserted into the square hole and forms sliding fit with the square hole along the circumferential direction, a pressure spring 45 is arranged between the first nut 44 and the impeller main shaft 40, and the pressure spring 45 is assembled so that the elastic force of the pressure spring 45 acting on the first nut 44 points to the outer side of the threaded hole; and a second nut 46 is further arranged in the threaded hole, and the inner end of the second nut 46 is abutted with the outer end of the first nut 44 for locking the first nut 44. When the angle of the blade 30 needs to be adjusted, the second nut 46 is firstly detached from the main shaft 40, the first nut 44 is exposed, then the first nut 44 is rotated by a wrench, synchronous adjustment of all the blades 30 can be achieved, after the adjustment is finished, the second nut 46 is installed back into the main shaft 40, the second nut 46 abuts against the first nut 44, and at the moment, the blade 30 can be prevented from loosening under the action of wind resistance in the operation process of a power element.
Further, as shown in fig. 5, a wind deflector 33 is arranged on the movable portion 32, the wind deflector 33 is attached to the rear disc 20, and the wind deflector 33 is assembled such that the wind deflector 33 can always completely cover the arc-shaped hole when the movable portion 32 swings to any angle. The wind shield 33 can prevent the material from scattering from the arc-shaped hole to the back side of the rear disc 20, and adverse effects on the operation of the transmission mechanism caused by the material are avoided.
Further, as shown in fig. 2, the edge of the side of the rear disk 20 opposite to the blades 30 is provided with a plurality of auxiliary blades 25, each auxiliary blade is uniformly arranged along the circumferential direction of the rear disk 20 at intervals, each auxiliary blade 25 is arranged in a vortex shape, and when the impeller is in a normal operating state, the auxiliary blade 25 can generate an airflow radially outward along the impeller. The air flow generated by the auxiliary blades 25 can prevent the material from entering the back side of the back disk 20 from the edge of the back disk 20, and further avoid the interference of the material on the operation of the transmission mechanism.
Further, as shown in fig. 1, 3 and 5, the wind turbine further includes a lining member made of a ceramic material, the lining member includes an end plate 51 attached to the rear disk 20, and ceramic blades 52 uniformly spaced along a circumferential direction of the end plate 51, and each ceramic blade 52 is attached to a windward side of each fixing portion 31. According to the invention, the ceramic lining is arranged in the area which is seriously impacted by materials in the impeller, so that the wear resistance of the impeller can be effectively improved, and the practical service life of the impeller is prolonged.
Example 2
A processing method of power components of the powder conveying device of embodiment 1, firstly, a laser cutting machine is used for cutting a front disk 10, a rear disk 20 and a blade 30 on a steel plate, a pivot is arranged on a movable part 32 of the blade 30, the front disk 10, the rear disk 20 and a fixed part 31 of the blade 30 are welded into a whole, and the movable part 32 of the blade 30 is arranged between the front disk 10 and the rear disk 20; finally, an angle adjustment mechanism is mounted on the rear plate 20. As shown in fig. 6, the present invention provides the front end of the main shaft 40 in a split structure for easy assembly.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention. Structures, devices, and methods of operation not specifically described or illustrated herein are generally practiced in the art without specific recitation or limitation.
Claims (9)
1. A power element of a powder conveying device comprises a front disk (10) and a rear disk (20) which are arranged at intervals in parallel, and a plurality of blades (30) which are arranged between the front disk (10) and the rear disk (20) at intervals uniformly along the circumferential direction, wherein each blade (30) is distributed in a vortex shape, and the power element is characterized in that: the blade (30) comprises a fixed part (31) and a movable part (32), wherein the fixed part (31) is positioned at one end of the blade (30) close to the center of the impeller, the movable part (32) is positioned at one end of the blade (30) far away from the center of the impeller, the fixed part (31) is fixedly connected with the front disc (10) and the rear disc (20), the movable part (32) is pivoted with the front disc (10) and the rear disc (20), a pivot is positioned at one end of the movable part (32) close to the fixed part (31), and an angle adjusting mechanism is arranged on the rear disc (20) and used for adjusting the relative included angle between the movable part (32) and the fixed part (31); the rear disc (20) and the impeller spindle (40) form a plug-in fit, the impeller spindle (40) protrudes to a position between the front disc (10) and the rear disc (20), a rotary part (41) is arranged at the end part of the impeller spindle (40), the rotary part (41) is in relative rotary connection with the impeller spindle (40), the rotary part (41) is in transmission connection with an angle adjusting mechanism on the rear disc (20) through a transmission mechanism, and the transmission mechanism is assembled to drive the movable part (32) to swing when the rotary part (41) rotates relative to the impeller spindle (40).
2. The power element of a powder conveying apparatus according to claim 1, characterized in that: the angle adjusting mechanism comprises a pin shaft arranged on the movable part (32), the pin shaft and an arc-shaped hole formed in the rear disc (20) form sliding fit, a driving disc (21) is arranged on the rear disc (20) and one side, facing back, of each blade (30), a waist-shaped hole (211) arranged along the radial direction of the impeller is formed in the driving disc (21), and the pin shaft and the waist-shaped hole (211) form sliding fit; the driving disk (21) is in relative rotation fit with the rear disk (20).
3. The power element of a powder conveying apparatus according to claim 2, characterized in that: the transmission mechanism comprises a central gear (42) arranged on the revolving part (41) and a first planetary gear (43) arranged on the impeller main shaft (40) along the circumferential direction of the central gear (42), the first planetary gear (43) is rotationally connected with the impeller main shaft (40), and the first planetary gear (43) is meshed with the central gear (42); the transmission mechanism comprises a transition disc (23) which is in relative rotation connection with the rear disc (20), the inner and outer annular surfaces of the transition disc (23) are respectively provided with a first inner gear ring and an outer gear ring, and the first planetary gear (43) is meshed with the first inner gear ring; the rear disc (20) is circumferentially provided with a second planetary gear (22) along the transition disc (23), the second planetary gear (22) is rotatably connected with the rear disc (20), a second inner gear ring is arranged on the inner annular surface of the driving disc (21), the inner side of the second planetary gear (22) is meshed with the outer gear ring of the transition disc (23), and the outer side of the second planetary gear is meshed with the second inner gear ring of the driving disc (21).
4. The power element of a powder conveying apparatus according to claim 3, characterized in that: and a locking mechanism for keeping the rotary part (41) at any angle is arranged between the rotary part (41) and the impeller main shaft (40).
5. The power element of a powder conveying apparatus according to claim 4, characterized in that: the locking mechanism comprises a threaded hole arranged at the end part of the impeller main shaft (40), a first nut (44) is arranged in the threaded hole, a square hole is formed in the first nut (44), a square shaft is arranged on the rotary part (41), the square shaft is inserted into the square hole and forms sliding fit with the square hole along the circumferential direction, a pressure spring (45) is arranged between the first nut (44) and the impeller main shaft (40), and the pressure spring (45) is assembled to enable the elastic force of the pressure spring acting on the first nut (44) to point to the outer side of the threaded hole; and a second nut (46) is further arranged in the threaded hole, and the inner end of the second nut (46) is abutted against the outer end of the first nut (44) and used for locking the first nut (44).
6. The power element of a powder conveying apparatus according to claim 2, characterized in that: be equipped with deep bead (33) on movable part (32), deep bead (33) and back plate (20) laminating, and deep bead (33) can always be when assembled movable part (32) swing to arbitrary angle deep bead (33) the arc hole covers completely.
7. The power element of a powder conveying apparatus according to claim 3, characterized in that: the edge of one side of the back plate (20), which is opposite to the blades (30), is provided with a plurality of auxiliary blades (25), each auxiliary blade is uniformly arranged along the circumference of the back plate (20) at intervals, each auxiliary blade (25) is arranged in a vortex shape, and the auxiliary blades (25) can generate airflow which is radially outward along the impeller in the normal working state of the impeller.
8. The power element of a powder conveying apparatus according to claim 1, characterized in that: the wind-driven generator further comprises a lining piece made of ceramic materials, the lining piece comprises an end plate (51) attached to the rear disc (20) and ceramic blades (52) arranged along the circumferential direction of the end plate (51) at even intervals, and each ceramic blade (52) is attached to the windward side of each fixing portion (31).
9. A method for processing a power element of a powder conveying apparatus according to any one of claims 1 to 8, characterized in that: firstly, cutting a front disc (10), a rear disc (20) and blades (30) on a steel plate by using a laser cutting machine, installing a pivot on a movable part (32) of each blade (30), welding the front disc (10), the rear disc (20) and a fixed part (31) of each blade (30) into a whole, and installing the movable part (32) of each blade (30) between the front disc (10) and the rear disc (20); finally, an angle adjusting mechanism is arranged on the rear disc (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110815330.6A CN113264379B (en) | 2021-07-19 | 2021-07-19 | Power element of powder conveying device and processing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110815330.6A CN113264379B (en) | 2021-07-19 | 2021-07-19 | Power element of powder conveying device and processing method thereof |
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| Publication Number | Publication Date |
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| CN113264379A CN113264379A (en) | 2021-08-17 |
| CN113264379B true CN113264379B (en) | 2021-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110815330.6A Active CN113264379B (en) | 2021-07-19 | 2021-07-19 | Power element of powder conveying device and processing method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1278796A (en) * | 1960-11-28 | 1961-12-15 | Stork Koninklijke Maschf | Rotor for centrifugal pumps or fans |
| FR1307113A (en) * | 1961-11-29 | 1962-10-19 | L J Gilchrist & Co Engineers L | Improvement in blowers or centrifugal vane wheels |
| CN209908838U (en) * | 2019-04-03 | 2020-01-07 | 鞍山钢峰风机有限责任公司 | Assembled centrifugal fan impeller of adjustable blade angle |
| CN111664118A (en) * | 2020-07-09 | 2020-09-15 | 上海瑞晨环保科技股份有限公司 | Multi-working-condition wing type centrifugal fan impeller |
| CN212744473U (en) * | 2020-07-22 | 2021-03-19 | 青岛永逢润钛风机制造有限公司 | Corrosion-resistant centrifugal fan impeller |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8662846B2 (en) * | 2010-09-14 | 2014-03-04 | General Electric Company | Bidirectional fan having self-adjusting vane |
-
2021
- 2021-07-19 CN CN202110815330.6A patent/CN113264379B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1278796A (en) * | 1960-11-28 | 1961-12-15 | Stork Koninklijke Maschf | Rotor for centrifugal pumps or fans |
| FR1307113A (en) * | 1961-11-29 | 1962-10-19 | L J Gilchrist & Co Engineers L | Improvement in blowers or centrifugal vane wheels |
| CN209908838U (en) * | 2019-04-03 | 2020-01-07 | 鞍山钢峰风机有限责任公司 | Assembled centrifugal fan impeller of adjustable blade angle |
| CN111664118A (en) * | 2020-07-09 | 2020-09-15 | 上海瑞晨环保科技股份有限公司 | Multi-working-condition wing type centrifugal fan impeller |
| CN212744473U (en) * | 2020-07-22 | 2021-03-19 | 青岛永逢润钛风机制造有限公司 | Corrosion-resistant centrifugal fan impeller |
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