CN114602634A - Double-rotor superfine powder concentrator - Google Patents

Abstract

The invention discloses a double-rotor superfine powder concentrator, which comprises a powder concentrator main body, wherein the outer surface of the powder concentrator main body is fixedly connected with a plurality of cyclone cylinders through a powder outlet pipe, one side of the top of the powder concentrator main body is fixedly connected with a material conveying box, a motor is arranged at the center of the top of the powder concentrator main body, and the output end of the motor is fixedly connected with a rotating shaft, so that the device can drive two rotors to rotate through one motor, the rotating speeds of the two rotors are different through a speed change mechanism, and the distance between an upper ring plate and a lower ring plate can be adjusted through a rotating lifting mechanism while the motor rotates, thereby the effective grading area formed when the blades of the first rotor and the blades of the second rotor rotate can be changed, further, the device can more efficiently sieve powder with different particle size grades, and further, the application range of the device is greatly improved, and the energy consumption of the invention is greatly reduced, and the energy-saving effect is achieved.

Description

Double rotor superfine powder separator

technical field

The invention relates to the technical field of powder separators, in particular to a double-rotor ultrafine powder separator.

Background technique

The powder separator is widely used in the coal mill, raw meal unloading drying mill and cement mill system in the new dry process cement production line. It can be divided into three-separation separator, centrifugal separator and cyclone separator. There are three types of powder separators. Different types are suitable for different materials. Different models are also made according to the customer's requirements for material fineness. Later, many high-efficiency powder separators have been developed. High-efficiency three-separation Powder separator, according to the working principle and structure of these equipment, people have developed the more commonly used double rotor powder separator on the market. The double rotor powder separator has a simple structure and good effect, and has many advantages: the particle size distribution of the finished product is concentrated, the particle size The distribution is more reasonable, and the product quality is obviously improved; the operation is convenient, and the fineness is easy to adjust; energy saving and consumption reduction, the unit power consumption of the system is reduced by about 30% compared with the traditional circulating powder; the powder selection efficiency can reach 85-90%; anti-condensation The effect is reliable, and it can adapt to various climatic environments. However, the existing dual-rotor powder separators generally either use a single motor to rotate at the same speed, or use dual motors to drive dual rotors to rotate at different speeds. Either of the above methods is applicable. It is not strong or consumes a lot of energy, which leads to certain defects in actual production, and powder raw materials are prone to agglomeration due to water absorption when entering the powder separator, which will cause damage to pipes such as the feeding port. clogging, which seriously affects the working efficiency of the powder separator. For this reason, we propose a dual-rotor ultra-fine powder separator.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a double-rotor ultrafine powder separator to solve the problems raised in the above-mentioned background art.

In order to solve the above technical problems, the present invention provides the following technical solution: a double-rotor ultra-fine powder separator includes a powder separator main body, and the outer surface of the powder separator main body is fixedly connected with a plurality of cyclones through a powder outlet pipe. A feeding box is fixedly connected to the top side of the main body of the powder concentrator, a motor is installed at the top center of the main body of the powder concentrator, the output end of the motor is fixedly connected with a rotating shaft, and the other end of the rotating shaft extends to the powder concentrator. A first rotor is fixedly connected inside the main body of the machine through a rotating lifting mechanism, a second rotor is rotatably connected to the bottom of the first rotor through a speed change mechanism, and a third connecting shaft is fixedly connected to the bottom of the second rotor. A second support plate is fixedly connected to the bottom of the third connecting shaft, and a grinding mechanism is arranged inside the feeding box.

Preferably, the rotating lifting mechanism includes a first support plate fixedly connected with the rotating shaft, a fixed cylinder is fixedly connected to the bottom of the first support plate, and a plurality of limit grooves are opened in the interior of the fixed cylinder. The upper and lower ends of the limit slot are provided with unlocking slots, the inner wall of the unlocking slot is fixedly connected with an electric push rod, the output end of the electric push rod is fixedly connected with a push plate, and the rotating shaft extends to the first support plate The lower outer surface is threadedly connected with an inner thread sleeve, the outer surface of the inner thread sleeve is fixedly connected with a plurality of fixing blocks, the interior of the fixing block is provided with a groove, and the inner wall of the groove is fixedly connected with a A return spring, the other end of the return spring is fixedly connected with a limiting block, thereby greatly improving the adjustment efficiency of the device.

Preferably, the speed change mechanism includes a first connecting shaft fixedly connected with the bottom of the first rotor and a second connecting shaft fixedly connected with the top of the second rotor, and the top of the second connecting shaft is fixedly connected with an internal gear plate, The bottom of the first connecting shaft extends to the inside of the internal gear plate and is fixedly connected with a driving gear. The outer surface of the driving gear is meshed and connected with a plurality of sets of auxiliary gears, and the other side of the auxiliary gears away from the driving gear and the inner The gear plates are meshed and connected, thereby greatly improving the scope of application and practicability of the device.

Preferably, the grinding mechanism includes a first gear mounted on the outer surface of the rotating shaft and a grinding disc mounted on the top of the first support plate, one side of the first gear is meshed and connected with a second gear, and the second gear There is a feeding shaft fixedly connected to the inside of the feeding shaft, and the bottom of the feeding shaft extends to the inside of the feeding box and is fixedly connected with a grinding head matched with the grinding disc, thereby greatly improving the powder selection efficiency.

Preferably, the bottom of the grinding disc is fixedly connected with the first support plate, and the grinding disc is of an annular structure, the inner wall of the grinding disc and the outer wall of the grinding head are provided with several protruding blocks. The bottom of the device is provided with a feeding port, which greatly improves the grinding and pulverizing effect of the device.

Preferably, a feeding port is fixedly connected to the top side of the feeding box through an inclined tube, and a screw conveying blade is fixedly connected to the outer surface of the feeding shaft inside the feeding box, thereby greatly improving the processing efficiency of the device. efficiency.

Preferably, the first rotor includes an upper ring plate fixedly connected with the inner threaded sleeve and a lower ring plate fixedly connected with the fixing cylinder, and a plurality of first rotor blades are hinged on the outer surface of the upper ring plate, so The other end of the first rotor blade is hinged with a second rotor blade, and the end of the second rotor blade away from the first rotor blade is hinged with the lower ring plate, thereby greatly improving the application range of the device.

Preferably, a coarse powder outlet is provided at the bottom of the main body of the powder separator, a fine powder outlet is provided at the bottom of the cyclone, and the outer surfaces of the fine powder outlet and the coarse powder outlet are provided with sealing covers, thereby greatly improving the the tightness of the device.

Preferably, the first support plate and the second support plate are provided with several ventilation holes, and the tops of the plurality of cyclones are fixedly connected to the connecting air pipes through pipes, and the connecting square pipes are far away from the cyclones. One end of the fan is fixedly connected with the main body of the fan, which greatly improves the powder selection efficiency of the device.

Preferably, a controller is fixedly connected to the outer surface of the main body of the powder separator, and a control switch is fixedly connected to the outer surface of the controller, thereby greatly improving the control efficiency of the device.

Compared with the prior art, the beneficial effects achieved by the present invention are:

1. In the present invention, the motor, the rotating shaft, the first support plate, the second support plate, the first rotor, the second rotor, the upper ring plate, the lower ring plate, the first rotor blade, the second rotor blade, the fixed cylinder, the inner Threaded sleeve, limit slot, unlock slot, electric push rod, push plate, fixed block, groove, return spring, limit block, first connecting shaft, driving gear, auxiliary gear, internal gear plate, second connecting shaft and rotating rod, so that the device can drive two rotors to rotate through one motor, and can make the rotation speed between the two rotors different through the speed change mechanism, and while the motor rotates, the upper ring plate can also be adjusted by the rotating lifting mechanism. The distance between the rotor and the lower ring plate can be adjusted, so that the effective classification area formed by the rotation of the first rotor blade and the second rotor blade can be changed, so that the device can more efficiently sieve powders of different particle sizes. Therefore, the scope of application of the device is greatly improved, the energy consumption of the present invention is greatly reduced, and the effect of energy saving is achieved;

2. In the present invention, the first gear, the second gear, the feeding shaft, the feeding box, the feeding port, the screw conveying blade, the grinding head, the grinding disc and the feeding port are also arranged, so that the device can pass through the feeding port during feeding. The grinding mechanism grinds the agglomerated powder blocks, thereby effectively avoiding the clogging of the feed inlet and pipeline caused by the agglomerated powder blocks, thereby greatly improving the working efficiency and practicability of the device.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the specification, and are used to explain the present invention together with the embodiments of the present invention, and do not constitute a limitation to the present invention. In the attached image:

Fig. 1 is the front view of the present invention as a whole;

Fig. 2 is the internal structure diagram of the main body of the inner powder separator of the present invention;

Fig. 3 is the enlarged view of A place in Fig. 2 of the present invention;

Fig. 4 is the internal structure schematic diagram of the internal gear plate of the present invention;

Fig. 5 is the enlarged view of B place in Fig. 2 of the present invention;

6 is a schematic diagram of the internal structure of the connecting portion of the first rotor and the fixed cylinder of the present invention;

Fig. 7 is the enlarged view of C place in Fig. 6 of the present invention;

Fig. 8 is the internal structure schematic diagram of the fixed block of the present invention;

In the figure: 1, the main body of the powder separator; 2, the powder outlet pipe; 3, the cyclone; 4, the fine powder outlet; 5, the coarse powder outlet; 6, the motor; first rotor; 91, upper ring plate; 92, lower ring plate; 93, first rotor blade; 94, second rotor blade; 10, second rotor; 11, second support plate; 12, connecting air duct; 13 , the first gear; 14, the second gear; 15, the feeding shaft; 16, the feeding box; 17, the feeding port; 18, the screw conveyor blade; 19, the grinding head; 20, the grinding disc; 21, the feeding port ;22, fixed cylinder; 23, internal thread sleeve; 24, limit slot; 25, unlock slot; 26, electric push rod; 27, push plate; 28, fixed block; 29, groove; 30, return spring; 31, limit block; 32, first connecting shaft; 33, driving gear; 34, auxiliary gear; 35, internal gear plate; 36, second connecting shaft; 37, rotating rod; 38, controller; 39, third Connect the shaft.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Please refer to FIG. 1 to FIG. 8. The present invention provides a dual-rotor ultra-fine powder separator, including a powder separator main body 1. The outer surface of the powder separator main body 1 is fixedly connected with a plurality of cyclones 3 through a powder outlet pipe 2. The top side of the machine main body 1 is fixedly connected with the feeding box 16, the top side of the feeding box 16 is fixedly connected with the feeding port 17 through the inclined pipe, and the outer surface of the feeding shaft 15 located inside the feeding box 16 is fixedly connected with a feeding port 17. The screw conveying blade 18 uses the screw conveying blade 18 and the inclined tube arranged obliquely, so that the device can be fed more quickly. A motor 6 is installed at the top center of the main body 1 of the powder separator, and the output end of the motor 6 is fixedly connected with a The rotating shaft 7, the other end of the rotating shaft 7 extends to the interior of the main body 1 of the powder separator and is fixedly connected with the first rotor 9 through the rotating lifting mechanism. The lower ring plate 92 of the fixed cylinder 22 is fixedly connected, the outer surface of the upper ring plate 91 is hinged with a plurality of first rotor blades 93, the other end of the first rotor blades 93 is hinged with a second rotor blade 94, and the second rotor blades 94 are away from One end of the first rotor blade 93 is hinged with the lower ring plate 92, and the angle between the first rotor blade and the second rotor blade can be changed with the change of the height of the inner threaded sleeve 23 by means of the hinged connection, so that the The effective grading area formed when the first rotor blade 93 and the second rotor blade 94 rotate can also be changed accordingly, so that the operator can choose an appropriate powder sorting method according to actual needs. A support plate 8, the bottom of the first support plate 8 is fixedly connected with a fixing cylinder 22, the interior of the fixing cylinder 22 is provided with a plurality of limiting grooves 24, and the upper and lower ends of the interior of the limiting groove 24 are provided with unlocking grooves 25. The inner wall of the groove 25 is fixedly connected with an electric push rod 26, the output end of the electric push rod 26 is fixedly connected with a push plate 27, and the outer surface of the rotating shaft 7 extending to the bottom of the first support plate 8 is threadedly connected with an inner thread sleeve 23. The outer surface of the threaded sleeve 23 is fixedly connected with a plurality of fixing blocks 28, the interior of the fixing blocks 28 is provided with a groove 29, the inner wall of the groove 29 is fixedly connected with a return spring 30, and the other end of the return spring 30 is fixedly connected with a limit block 31. The limit mode between the inner threaded sleeve 23 and the fixed cylinder 22 can be adjusted by the rotating lifting mechanism, so that the device can adjust the height of the inner threaded sleeve 23 according to actual needs. The bottom is rotatably connected with the second rotor 10 through a speed change mechanism, and the speed change mechanism includes a first connecting shaft 32 fixedly connected to the bottom of the first rotor 9 and a second connecting shaft 36 fixedly connected to the top of the second rotor 10. The second connecting shaft The top of 36 is fixedly connected with the internal gear plate 35, the bottom of the first connecting shaft 32 extends to the inside of the internal gear plate 35 and is fixedly connected with the driving gear 33, the outer surface of the driving gear 33 is meshed and connected with a plurality of sets of auxiliary gears 34, auxiliary gears 34. The other side of the gear 34 away from the driving gear 33 is meshed with the internal gear plate 35, and the speed of the first rotor 9 and the second rotor 10 can be adjusted by the speed change mechanism. The ratio is controlled, so that the operator can sort the input materials according to different standards. The bottom of the second rotor 10 is fixedly connected with a third connecting shaft 39, and the bottom of the third connecting shaft 39 is fixedly connected with a second support plate 11. A grinding mechanism is provided inside the feeding box 16. The grinding mechanism includes a first gear 13 mounted on the outer surface of the rotating shaft 7 and a grinding disc 20 mounted on the top of the first support plate 8. One side of the first gear 13 meshes A second gear 14 is connected, the inside of the second gear 14 is fixedly connected with a feeding shaft 15, and the bottom of the feeding shaft 15 extends to the inside of the feeding box 16 and is fixedly connected with a grinding head 19 that matches the grinding disc 20. , the agglomerated powder blocks can be ground and pulverized by the grinding mechanism, so as to effectively avoid the blockage of the agglomerated powder blocks to the feeding port 17 and the powder outlet pipeline, etc., the bottom of the grinding disc 20 and the first support plate 8. Fixed connection, and the grinding disc 20 is an annular structure, the inner wall of the grinding disc 20 and the outer wall of the grinding head 19 are provided with several protruding blocks, and the bottom of the grinding disc 20 is provided with a feeding port 21. The reverse rotation between 20 and the grinding head 19 enables the grinding disc 20 and the grinding head 19 to more effectively grind the agglomerated powder blocks. The bottom of the main body 1 of the powder concentrator is provided with a coarse powder outlet 5, The bottom of the cyclone 3 is provided with a fine powder outlet 4, and the outer surfaces of the fine powder outlet 4 and the coarse powder outlet 5 are provided with a sealing cover, and the coarse powder outlet 5 and the fine powder outlet 4 can be sealed by the sealing cover, thereby avoiding Leakage occurs during the powder selection process. The first support plate 8 and the second support plate 11 are both provided with a number of ventilation holes. The end of the pipe 12 away from the cyclone 3 is fixedly connected with the main body 1 of the fan separator. The connecting air duct 12 can form a circulation passage between the plurality of cyclones 3 and the main body 1 of the powder separator, so that the fine powder can be more easily entered with the airflow. Inside the cyclone 3, and the airflow can be re-discharged inside the classifier main body 1 through the pipeline, the outer surface of the powder classifier main body 1 is fixedly connected with a controller 38, and the outer surface of the controller 38 is fixedly connected with a control switch, using the controller 38 The electrical appliances inside the device can be controlled, so that the operator can more easily control the main body 1 of the powder separator.

The working principle of the present invention: when in use, the operator first puts raw materials into the feeding box 16 through the feeding port 17, and then starts the motor 6 through the controller 38, so that the motor 6 drives the first gear 13 through the rotating shaft 7 and the inner The threaded sleeve 23 rotates, when the first gear 13 rotates, the first gear 13 drives the second gear 14 to rotate by using the meshing connection between the first gear 13 and the second gear 14, so that the second gear 14 drives The feeding shaft 15 rotates, and the raw material is gradually transported to the bottom of the feeding box 16 through the screw conveying blade 18. When the raw material is transported to the bottom of the feeding box 16, the feeding shaft 15 will drive the grinding head 19 to rotate, so that the grinding The head 19 cooperates with the grinding disc 20 to grind the agglomerated particles in the raw material, so as to avoid clogging inside the device. A rotor 9 drives the driving gear 33 to rotate through the first connecting shaft 32, and then uses the meshing connection between the driving gear 33 and the auxiliary gear 34 and the meshing connection between the auxiliary gear 34 and the internal gear plate 35, so that the driving gear 33 The internal gear plate 35 can be driven to rotate through the auxiliary gear 34, and then the second rotor 10 can be driven to rotate through the internal gear plate 35, and the speed ratio between the first rotor 9 and the second rotor 10 can be changed by adjusting the inner diameter ratio of the gears. , so that the device can sort the input materials according to different standards, thereby greatly improving the scope of application and practicability of the device. When selecting powder, the operator can also rotate the lifting mechanism according to actual needs. Change the distance between the upper ring plate 91 and the lower ring plate 92 inside the first rotor 9 to adjust the effective grading area formed when the first rotor blade 93 and the second rotor blade 94 rotate. The controller 38 activates the electric push plate 26 so that the electric push rod 26 can close the unlocking slot 25 through the push plate 27, and then activates the motor 6, so that the motor 6 drives the rotating shaft 7 to rotate. Pushed by the push plate 27, the limit block 31 will compress the return spring 30 and gradually move to the inside of the groove 29, so that the limit groove 24 and the push plate 27 will form a limit effect on the limit block 31, and then The inner threaded sleeve 23 will rise or fall up or down along the threaded end of the rotating shaft 7. When the inner threaded sleeve 23 moves, the operator can start the electric push rod 26 at a certain place according to actual needs, so that it can push the electric push rod 26 by shrinking. The push plate 27 retracts into the unlocking groove 25. When the limiting block 31 on the outer surface of the female threaded sleeve 23 moves to the unlocking groove 25, the limiting block 31 will quickly spring into the unlocking groove 25 under the elastic action of the return spring 30. inside, so that the inner threaded sleeve 23 loses its position, so that the inner threaded sleeve 23 can rotate together with the rotating shaft 7. When the inner threaded sleeve 7 rises and falls, it will drive the upper ring plate 91 to move synchronously, so that the upper The distance between the ring plate 91 and the lower ring plate 92 will change, and then use the The hinged manner changes the angle between the first rotor blade 93 and the second rotor blade 94, and finally changes the effective grading area generated by the rotation of the first rotor blade 93 and the second rotor blade 94, when the effective grading area is larger When the number of grading cycles of coarse powder is more, the finer powder after classification will be less, and the quality of powder selection will become higher. When the quality decreases, the powder selection speed will be greatly improved, so that the operator can choose the appropriate powder selection method according to the actual needs, thereby greatly improving the working efficiency and powder selection quality of the device.

It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. any such actual relationship or sequence exists. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus.

Finally, it should be noted that the above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the The technical solutions described in the foregoing embodiments may be modified, or some technical features thereof may be equivalently replaced. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. Double-rotor superfine powder concentrator, which comprises a powder concentrator main body (1) and is characterized in that: the outer surface of the powder concentrator main body (1) is fixedly connected with a plurality of cyclones (3) through powder outlet pipes (2), one side of the top of the powder concentrator main body (1) is fixedly connected with a material conveying box (16), a motor (6) is arranged at the center of the top of the powder concentrator main body (1), the output end of the motor (6) is fixedly connected with a rotating shaft (7), the other end of the rotating shaft (7) extends into the main body (1) of the powder concentrator and is fixedly connected with a first rotor (9) through a rotary lifting mechanism, the bottom of the first rotor (9) is rotationally connected with a second rotor (10) through a speed change mechanism, the bottom of the second rotor (10) is fixedly connected with a third connecting shaft (39), the bottom of the third connecting shaft (39) is fixedly connected with a second supporting plate (11), and a grinding mechanism is arranged in the material conveying box (16).

2. The dual-rotor superfine powder concentrator of claim 1, wherein: the rotary lifting mechanism comprises a first supporting plate (8) fixedly connected with a rotating shaft (7), a fixed cylinder (22) is fixedly connected to the bottom of the first supporting plate (8), a plurality of limiting grooves (24) are formed in the fixed cylinder (22), unlocking grooves (25) are formed in the upper end and the lower end of the inner part of each limiting groove (24), an electric push rod (26) is fixedly connected to the inner wall of each unlocking groove (25), a push plate (27) is fixedly connected to the output end of the electric push rod (26), an internal thread sleeve (23) is connected to the outer surface of the rotating shaft (7) extending to the lower portion of the first supporting plate (8) through threads, a plurality of fixed blocks (28) are fixedly connected to the outer surface of the internal thread sleeve (23), a groove (29) is formed in the fixed block (28), and a reset spring (30) is fixedly connected to the inner wall of the groove (29), the other end of the return spring (30) is fixedly connected with a limiting block (31).

3. The dual-rotor superfine powder concentrator of claim 1, wherein: speed change mechanism including with first rotor (9) bottom fixed connection's first connecting axle (32) and with second rotor (10) top fixed connection's second connecting axle (36), the top fixedly connected with internal gear dish (35) of second connecting axle (36), the bottom of first connecting axle (32) extends to inside and fixedly connected with driving gear (33) of internal gear dish (35), the surface toothing of driving gear (33) is connected with multiunit auxiliary gear (34), auxiliary gear (34) keep away from the opposite side of driving gear (33) and are connected with internal gear dish (35) meshing.

4. The dual-rotor superfine powder concentrator of claim 2, wherein: grind mechanism including installing first gear (13) at pivot (7) surface and installing abrasive disc (20) at first backup pad (8) top, one side meshing of first gear (13) is connected with second gear (14), the inside fixedly connected with of second gear (14) is defeated material axle (15), the bottom of defeated material axle (15) extends to the inside of defeated workbin (16) and grinding head (19) of fixedly connected with and abrasive disc (20) looks adaptation.

5. The dual-rotor superfine powder concentrator of claim 4, wherein: the bottom and the first backup pad (8) fixed connection of abrasive disc (20), just abrasive disc (20) are the loop configuration, the inner wall of abrasive disc (20) and the outer wall of grinding head (19) all are provided with a plurality of protrusion piece, feed opening (21) have been seted up to the bottom of abrasive disc (20).

6. The dual-rotor superfine powder concentrator of claim 4, wherein: one side of the top of the material conveying box (16) is fixedly connected with a feeding hole (17) through an inclined pipe, and the outer surface of the material conveying shaft (15) inside the material conveying box (16) is fixedly connected with a spiral conveying blade (18).

7. The dual-rotor superfine powder concentrator of claim 2, wherein: first rotor is including last crown plate (91) with internal thread sleeve (23) fixed connection and with a fixed cylinder (22) fixed connection's lower crown plate (92), the surface of going up crown plate (91) articulates there is a plurality of first rotor blade (93), the other end of first rotor blade (93) articulates there is second rotor blade (94), the one end that first rotor blade (93) were kept away from in second rotor blade (94) is articulated with lower crown plate (92).

8. The dual-rotor superfine powder concentrator of claim 1, wherein: the powder concentrator is characterized in that a coarse powder outlet (5) is formed in the bottom of the powder concentrator main body (1), a fine powder outlet (4) is formed in the bottom of the cyclone (3), and sealing covers are arranged on the outer surfaces of the fine powder outlet (4) and the coarse powder outlet (5).

9. The dual-rotor superfine powder concentrator of claim 1, wherein: a plurality of ventilation holes are formed in the first supporting plate (8) and the second supporting plate (11), the tops of the cyclones (3) are fixedly connected with a connecting air pipe (12) through pipelines, and one end, far away from the cyclones (3), of the connecting square pipe (12) is fixedly connected with the fan selecting main body (1).

10. The dual-rotor superfine powder concentrator of claim 1, wherein: the outer surface of the powder concentrator main body (1) is fixedly connected with a controller (38), and the outer surface of the controller (38) is fixedly connected with a control switch.

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