CN215313922U - Device for reducing turbulent flow of powder concentrator - Google Patents
Device for reducing turbulent flow of powder concentrator Download PDFInfo
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- CN215313922U CN215313922U CN202121791982.2U CN202121791982U CN215313922U CN 215313922 U CN215313922 U CN 215313922U CN 202121791982 U CN202121791982 U CN 202121791982U CN 215313922 U CN215313922 U CN 215313922U
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- flow guide
- guide disc
- powder concentrator
- blades
- inner shaft
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Abstract
The utility model relates to the technical field of powder separators, and particularly discloses a device for reducing turbulence of a powder separator. Comprises a powder selecting shell, two sets of driving devices are arranged on the fixed end surface of the shell and are respectively connected with an inner shaft and a sleeve shaft through a transmission belt and a speed change gear, the inner shaft and the sleeve shaft are coaxially sleeved and coaxial, the main bodies of the two shafts are arranged at the upper part of the shell, the lower end of the inner shaft is provided with a cage-shaped rotor, the lower end of the sleeve which is coaxial is provided with a flow guide disc, the flow guide disc comprises a hub and blades, when the utility model works, the inner shaft drives the cage-shaped rotor to rotate, the sleeve coaxially drives the flow guide disc to rotate, dusty airflow upwards flows out of the air outlet through the flow guide rotary disc, the flow guide disc comprises a hub and blades, the blades divide the dusty airflow which turns upwards into a plurality of pieces, mutual interference among the airflows is reduced, and the blades have certain radian, can produce certain malleation at the rotation in-process, have the guide effect to the air current, can effectively reduce the pressure drop that harmful turbulent flow produced.
Description
Technical Field
The utility model relates to the technical field of powder separators, in particular to a device for reducing turbulence of a powder separator.
Background
The powder selecting machine material is introduced from the feeding port, is impacted and dispersed on the material spreading plate and flies along the circumferential direction, then is collided with the buffer plate and introduced into the powder selecting chamber, the powder particles dispersed by the airflow in the powder selecting chamber are adjusted by vortex flow through the guide vanes and the rotor, and the balance is generated between the centrifugal force and the inward airflow to realize classification. The fine powder and the classified air (air or air containing dust) sent by the first and second air inlets are sent to the central part of the powder selecting chamber and then enter the air outlet pipe. On the other hand, the coarse powder acted by centrifugal force is led to the peripheral guide vanes and flows along the inner sides of the vanes, and the fine powder on the surface of the coarse powder is washed by air flowing in from the primary air opening and the secondary air opening, so that the secondary classification of the coarse powder is realized. The coarse powder falls into a lower ash bucket to be collected.
In the above-mentioned air separation process for materials, the air flow, including the magnitude of the air flow rate and the direction of the air flow, is a key factor for determining the air separation efficiency. Since the transmission position is right above the upper shell, the powder outlet is arranged above the side of the powder concentrator. This causes the rotor to produce uneven powder and has an eccentric phenomenon. The position close to the air outlet of the upper shell has stronger suction force to the rotor, and the suction force to the rotor at the far end is relatively weaker. The eccentricity and turbulence generated become more pronounced as the size of the rotor of the powder concentrator increases. In addition, the dusty airflow rushes to the top plate of the lower shell, strong turbulence is generated between the rotor and the top plate of the lower shell at the same time, the turbulence has negative effects, a beneficial vortex field can generate pressure drop, and the running resistance of the powder concentrator is increased. Moreover, the dust-containing air flow enters the top of the rotor, and strong erosion effect is generated on the top of the rotor and a rotor sealing ring.
SUMMERY OF THE UTILITY MODEL
The utility model solves the problems that: in the prior art, turbulent flow occurs in the powder concentrator, so that the energy consumption of production energy is increased, the economic benefit is reduced, and a device for reducing the turbulent flow of the powder concentrator is provided.
The utility model is realized by the following technical scheme that the device for reducing the turbulent flow of the powder concentrator comprises a shell of the powder concentrator, two sets of driving devices consisting of speed regulating motors are assembled on the fixed end surface of the shell, the two speed regulating motors are respectively connected with an inner shaft and a sleeve shaft through a transmission belt and a speed change gear, the inner shaft and the sleeve shaft are of a concentric sleeve coaxial structure, main bodies of the two shafts are arranged at the upper part of the shell, the lower end of the inner shaft is provided with a cage-shaped rotor, and the coaxial lower end of the sleeve is provided with a flow guide disc.
Furthermore, the whole flow guide disc is cylindrical with a taper at the upper part, the flow guide disc comprises a hub and blades, the hub is in a horn shape expanding downwards, the blades are uniformly distributed around the hub, and the upper part of the flow guide disc extends into the air outlet.
Further, the number of the blades is 8-12.
Further, the diameter of the flow guide disc is 0.6-0.8 times of that of the cage-shaped rotor.
Furthermore, the gap between the lower end of the flow guide disc and the cage-shaped rotor is 10-20 mm.
Furthermore, the surface of the flow guide disc is pasted with alumina wear-resistant ceramics.
The utility model has the beneficial effects that:
when the dust-collecting powder separator works, the inner shaft drives the cage-shaped rotor to rotate, the sleeve coaxially drives the guide plate to rotate, the cage-shaped rotor completes normal powder selection, dust-containing airflow upwards flows out of the air outlet through the guide turntable, the guide plate comprises a hub and blades, the blades divide the dust-containing airflow which turns upwards into a plurality of pieces, mutual interference among the airflows is reduced, and the blades have certain radian, can generate certain positive pressure in the rotating process, have a guiding effect on the airflows, and can effectively reduce pressure drop generated by harmful turbulent flow.
Drawings
FIG. 1 is a schematic structural diagram of a device for reducing turbulence of a powder concentrator according to the present invention;
fig. 2 is a schematic structural view of a diaphragm according to the present invention.
In the figure: 1. a housing; 2. an inner shaft; 3. a quill; 4. a cage rotor; 5. a flow guide disc; 501. a hub; 502. a blade.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-2, a device for reducing turbulent flow of a powder concentrator comprises a powder concentrator casing 1, two sets of driving devices composed of speed regulating motors are assembled on the fixed end surface of the casing 1, the two speed regulating motors are respectively connected with an inner shaft 2 and a sleeve shaft 3 through a transmission belt and a speed change gear, the inner shaft 2 and the sleeve shaft 3 are of a concentric sleeve coaxial structure, the main bodies of the two shafts are arranged on the upper part of the casing 1, the lower end of the inner shaft 2 is provided with a cage-shaped rotor 4, and the lower end of the sleeve coaxial structure is provided with a flow guide disc 5.
In practical application, the whole diversion disc 5 is cylindrical with a taper on the upper part, the diversion disc 5 comprises a hub 501 and blades 502, the hub 501 is in a horn shape expanding downwards, the blades 502 are uniformly distributed around the hub 501, and the upper part of the diversion disc 5 extends into the air outlet.
In practical applications, the number of the blades 502 is 8-12.
In practical application, the diameter of the flow guide disc 5 is 0.6-0.8 times of that of the cage-shaped rotor 4.
In practical application, the gap between the lower end of the flow guide disc 5 and the cage-shaped rotor 4 is 10-20 mm.
In practical application, the surface of the deflector 5 is pasted with alumina wear-resistant ceramics.
The working principle of the utility model is as follows:
when the powder sorting machine works, the inner shaft 2 drives the cage-shaped rotor 4 to rotate, the sleeve shaft 3 drives the flow guide disc 5 to rotate, the cage-shaped rotor 4 finishes normal powder sorting, dusty airflow upwards flows out of the air outlet through the flow guide disc 5, the flow guide disc 5 comprises a hub 501 and blades 502, the blades 502 divide the dusty airflow which turns upwards into a plurality of pieces, mutual interference among the airflows is reduced, the blades 502 have certain radian, certain positive pressure can be generated in the rotating process, the guiding effect on the airflows is achieved, and the pressure drop caused by harmful turbulent flow can be effectively reduced.
In conclusion, the device for reducing the turbulence of the powder concentrator cuts and guides the dust-containing airflow, and can effectively reduce the pressure drop generated by harmful turbulence.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the foregoing embodiments are merely illustrative of the technical spirit and features of the present invention, and the present invention is not limited thereto but may be implemented by those skilled in the art.
Claims (6)
1. A device for reducing turbulent flow of a powder concentrator is characterized in that: the powder concentrator comprises a powder concentrator shell (1), wherein two driving devices consisting of speed regulating motors are assembled on the fixed end face of the shell (1), the two speed regulating motors are respectively connected with an inner shaft (2) and a sleeve shaft (3) through a conveying belt and a speed changing gear, the inner shaft (2) and the sleeve shaft (3) are of a concentric sleeve coaxial structure, the main bodies of the two shafts are arranged on the upper part of the shell (1), the lower end of the inner shaft (2) is provided with a cage-shaped rotor (4), and the lower end of the sleeve coaxial structure is provided with a flow guide disc (5).
2. The device for reducing turbulence in a powder concentrator as defined in claim 1, wherein: the whole tapered cylindric of upper portion area that is of flow guide disc (5), flow guide disc (5) include wheel hub (501) and blade (502), wheel hub (501) are the loudspeaker form of expanding downwards, a plurality of blades (502) of equipartition around wheel hub (501), air outlet is stretched into on flow guide disc (5) upper portion.
3. The device for reducing turbulence in a powder concentrator as defined in claim 2, wherein: the number of the blades (502) is 8-12.
4. The device for reducing turbulence in a powder concentrator as defined in claim 1, wherein: the diameter of the flow guide disc (5) is 0.6-0.8 times of that of the cage-shaped rotor (4).
5. The device for reducing turbulence in a powder concentrator as defined in claim 1, wherein: the clearance between the lower end of the flow guide disc (5) and the cage-shaped rotor (4) is 10-20 mm.
6. The device for reducing turbulence in a powder concentrator as defined in claim 1, wherein: the surface of the flow guide disc (5) is pasted with alumina wear-resistant ceramics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121791982.2U CN215313922U (en) | 2021-08-02 | 2021-08-02 | Device for reducing turbulent flow of powder concentrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121791982.2U CN215313922U (en) | 2021-08-02 | 2021-08-02 | Device for reducing turbulent flow of powder concentrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215313922U true CN215313922U (en) | 2021-12-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121791982.2U Active CN215313922U (en) | 2021-08-02 | 2021-08-02 | Device for reducing turbulent flow of powder concentrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215313922U (en) |
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2021
- 2021-08-02 CN CN202121791982.2U patent/CN215313922U/en active Active
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