Improved efficient rotor powder concentrator

Abstract

The invention discloses an improved efficient rotor powder selecting machine, and relates to the technical field of lithium battery diaphragm production equipment, the improved efficient rotor powder selecting machine comprises a powder selecting mechanism, a circulating airflow mechanism and a discharging mechanism, and the bottom end of the powder selecting mechanism and the top end of the discharging mechanism are fixedly installed. According to the rotor powder concentrator, the powder selecting mechanism and the discharging mechanism are improved, after materials enter the feeding pipe, the materials fall into the dispersing pipe from the feeding pipe, the dispersing pipe rotates at a constant speed, and therefore the materials in the dispersing pipe are evenly dispersed in the feeding hopper through the multiple feeding holes in the bottom, the powder selecting mechanism can evenly feed the materials into the rotor powder concentrator, and the powder selecting efficiency is improved. According to the powder selecting device for the lithium battery diaphragm, materials can be well dispersed in the initial stage, the powder selecting effect in the lithium battery diaphragm machining process is improved, meanwhile, fine powder adhering to the inner wall of the powder outlet pipe can be automatically scraped through the scraping plate, the situation that the fine powder is continuously adhered to the inner wall of the powder outlet pipe in the powder selecting process is avoided, the equipment shutdown maintenance time is shortened, and the production continuity is improved.

Description

Technical Field

[0001] The invention relates to the technical field of lithium battery diaphragm production equipment, in particular to an improved high-efficiency rotor powder classifier. Background Art

[0002] In the production process of lithium battery separators, some material mixtures with different particle sizes are often produced. For example, in the processes of raw material grinding and drying after coating, the materials need to be finely graded and screened to obtain materials with a specific particle size range for subsequent processing to ensure the stable performance of the lithium battery separator. The high-efficiency powder classifier is a new type of grading equipment developed to overcome the defects of uneven material spreading and uneven grading flow field of centrifugal and cyclone powder classifiers. The high-efficiency rotor powder classifier can be used to grade material mixtures with different particle sizes for lithium battery separator processing.

[0003] For example, the Chinese patent CN114602634B, a "dual-rotor ultrafine powder classifier", includes a powder classifier body, the outer surface of which is fixedly connected to a plurality of cyclones via a powder outlet pipe, a feed box is fixedly connected to one side of the top of the powder classifier body, a motor is installed at the top center of the powder classifier body, and a rotating shaft is fixedly connected to the output end of the motor.

[0004] When processing lithium battery separator related materials, traditional rotor powder classifiers lack measures to evenly disperse the materials, which leads to blockage of the feed port or uneven feed speed, and the materials cannot be evenly fed into the rotor powder classifier. The materials entering the machine body are accumulated in some areas, while there are fewer materials in other areas. In this way, when the rotor rotates and the airflow acts, the accumulated materials cannot be fully dispersed, affecting the powder selection effect; at the same time, in the powder selection process, the fine powder screened out is easy to stick to the inner wall of the discharge pipe during the discharging process due to its small particle size. In severe cases, the discharge port will be blocked, and the operator is required to manually clean it later, which is not conducive to the normal use of the powder classifier. In view of the above problems, an improved high-efficiency rotor powder classifier is proposed. Summary of the invention

[0005] The object of the present invention is to provide an improved high-efficiency rotor powder classifier to solve the problems raised by the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an improved high-efficiency rotor powder classifier, comprising a powder selection mechanism, a circulating airflow mechanism and a discharging mechanism, the bottom end of the powder selection mechanism is fixedly installed with the top end of the discharging mechanism, the powder selection mechanism comprises a machine body, an air inlet pipe, an outer shell, a feed pipe, a driving motor, a rotating rod and a spreading plate, the bottom end of the outer shell is welded to the top end of the machine body, and a feed hopper is fixedly installed inside the outer shell, the discharging mechanism comprises an assembly plate and a powder discharge pipe, the powder selection mechanism also comprises a dispersion motor, a dispersion pipe and a gear rod, the bottom end of the dispersion motor is fixedly installed with the top of the outer shell, and the output end of the dispersion motor is fixedly connected with the top of the gear rod, and the top of the dispersion pipe is connected to the outer shell The top wall is rotatably connected, and a plurality of feeding holes are penetrated through the annular array at the bottom of the dispersion tube, the outer wall of the bottom end of the gear rod is meshed with the outer wall of the dispersion tube, the discharging mechanism also includes a scraper motor, an active rod, a belt, a driven rod, a gear plate and a movable ring, the output end of the scraper motor is fixedly connected to the bottom of the active rod, the active rod is connected to the driven rod through a belt, the bottom end of the driven rod is welded to the top of the gear plate, the outer edge of the movable ring is rotatably connected to the top inner wall of the powder discharge tube, and the top of the movable ring is fixedly connected with a gear ring, the inner edge of the gear ring is meshed with the outer wall of the gear plate, the bottom of the movable ring is fixedly connected with a fixed plate, and the outer side of the fixed plate is fixedly connected with a scraper.

[0007] Preferably, the top of the powder outlet pipe is fixedly mounted to the bottom of the assembly plate, the top wall of the assembly plate is fixedly connected to the inner shell, and the top end of the driven rod is rotatably connected to the top end of the assembly plate.

[0008] Preferably, a discharge port is provided at the bottom of the powder discharge pipe, and a support frame is fixedly installed on the outer side of the top end of the powder discharge pipe.

[0009] Preferably, a driving wheel is fixedly connected to the bottom output end of the driving motor, a driven wheel is fixedly connected to the top of the rotating rod, and the bottom end of the rotating rod is fixedly connected to the top of the spreading tray.

[0010] Preferably, an upper rotor is provided inside the machine body, the top outer edge of the spreading plate is rotatably connected to the bottom end of the upper rotor, and the bottom of the spreading plate is fixedly connected to a lower rotor, and a drip assembly is fixedly connected inside the bottom end of the machine body.

[0011] Preferably, the bottom of the body is fixedly mounted to the top of the assembly plate, and a plurality of connecting pipes are fixedly connected to the outer wall of the shell in an annular array.

[0012] Preferably, the circulating airflow mechanism comprises a circulating air duct and an air outlet duct, one end of the air outlet duct is fixedly connected to one end of the circulating air duct, and a plurality of cyclones are fixedly connected to a bottom annular array of the air outlet duct.

[0013] Preferably, the outer side of the cyclone barrel is fixedly connected to one end of the connecting pipe, and the bottom end of the cyclone barrel is fixedly connected to the top of the assembly plate, and the outer wall of the body is fixedly connected to one end of the air inlet pipe.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. In the present invention, by improving the powder selection mechanism, the gear rod is driven to rotate by the dispersion motor, thereby driving the dispersion tube to rotate at a uniform speed. A plurality of penetrating feed holes are arranged at the bottom of the dispersion tube. When the material enters the feed tube, it falls from the feed tube into the dispersion tube, and the dispersion tube rotates at a uniform speed, so that the material in the dispersion tube is evenly dispersed in the feed hopper through the plurality of feed holes at the bottom. The powder selection mechanism can evenly feed the material into the rotor powder selector, so that the material can be well dispersed in the initial stage, and the material entering the machine body is prevented from accumulating in certain areas, so that the material in the subsequent machine body can be fully dispersed under the action of the rotor rotation and airflow, thereby improving the powder selection effect in the processing of lithium battery diaphragms.

[0016] 2. In the present invention, by improving the discharging mechanism, the scraper motor can drive the active rod and the driven rod to rotate, thereby driving the gear plate at the bottom of the assembly plate to rotate, and the outer wall of the gear plate is meshed with the inner wall of the gear ring, so that the gear ring and the movable ring rotate. When the movable ring rotates, it can drive the fixed plate and the scraper to slide along the inner wall of the powder discharge pipe, and the scraper can scrape off the fine powder stuck on the inner wall of the powder discharge pipe. During the powder selection process, the scraper can automatically scrape off the fine powder stuck on the inner wall of the powder discharge pipe, thereby preventing the fine powder from constantly sticking to the inner wall of the powder discharge pipe during the powder selection process, and avoiding the accumulation of fine powder on the inner wall of the powder discharge pipe to cause blockage of the discharge port. At the same time, there is no need for the operator to manually clean it later, thereby reducing the equipment downtime for maintenance and improving production continuity. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an improved high-efficiency rotor powder separator of the present invention;

[0018] Figure 2 It is a schematic diagram of the top view of the structure of an improved high-efficiency rotor powder classifier of the present invention;

[0019] Figure 3 It is a schematic diagram of the top view of the powder selection mechanism of an improved high-efficiency rotor powder selection machine of the present invention;

[0020] Figure 4 It is a side sectional view of a powder selection mechanism of an improved high-efficiency rotor powder selection machine of the present invention;

[0021] Figure 5 It is a bottom view structural schematic diagram of a dispersion pipe of an improved high-efficiency rotor powder concentrator of the present invention;

[0022] Figure 6 It is a schematic diagram of the interior of the housing of an improved high-efficiency rotor powder separator of the present invention;

[0023] Figure 7 It is a front cross-sectional view of a discharging mechanism of an improved high-efficiency rotor powder classifier of the present invention;

[0024] Figure 8 The invention provides an improved high-efficiency rotor powder separator. Figure 7 A magnified detail of point A in the middle.

[0025] In the figure: 1. powder selection mechanism; 2. circulating air flow mechanism; 3. discharging mechanism; 11. machine body; 12. air inlet pipe; 13. shell; 14. connecting pipe; 15. feeding pipe; 16. driving motor; 17. driving wheel; 18. driven wheel; 19. dispersion motor; 110. feeding hopper; 111. rotating rod; 112. spreading plate; 113. upper rotor; 114. lower rotor; 115. dispersion pipe; 116. feeding hole; 117, gear rod; 118, drip assembly; 21, circulating air duct; 22, air outlet pipe; 23, cyclone; 31, assembly plate; 32, powder outlet pipe; 33, support frame; 34, scraper motor; 35, active rod; 36, inner shell; 37, discharge port; 38, belt; 39, driven rod; 310, gear plate; 311, movable ring; 312, fixed plate; 313, scraper; 314, gear ring. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Example 1: Reference Figure 1 - Figure 6As shown: an improved high-efficiency rotor powder separator, comprising a powder separator 1, a circulating airflow mechanism 2 and a discharging mechanism 3, wherein the bottom end of the powder separator 1 is fixedly mounted with the top end of the discharging mechanism 3, the powder separator 1 comprises a body 11, an air inlet pipe 12, a shell 13, a feeding pipe 15, a driving motor 16, a rotating rod 111 and a spreading plate 112, the bottom end of the shell 13 is welded with the top end of the body 11, and a feeding hopper 110 is fixedly mounted inside the shell 13, and the powder separator 1 also comprises a dispersed electric The dispersing motor 19 is fixedly mounted on the top of the housing 13, and the output end of the dispersing motor 19 is fixedly connected to the top of the gear rod 117. The top of the dispersing tube 115 is rotatably connected to the top wall of the housing 13, and a plurality of feed holes 116 are provided in an annular array at the bottom of the dispersing tube 115. The outer wall of the bottom end of the gear rod 117 is meshed with the outer wall of the dispersing tube 115. The output end of the driving motor 16 is fixedly connected to an active The top of the rotating rod 111 is fixedly connected with the driven wheel 18, and the bottom end of the rotating rod 111 is fixedly connected with the top of the spreading plate 112, and the upper rotor 113 is arranged inside the body 11, and the top outer edge of the spreading plate 112 is rotatably connected with the bottom end of the upper rotor 113, and the bottom of the spreading plate 112 is fixedly connected with the lower rotor 114, and the bottom end of the body 11 is fixedly connected with the drip assembly 118, and the bottom of the body 11 is fixedly installed with the top of the assembly plate 31, and the outer The outer wall of the shell 13 is fixedly connected to a plurality of connecting pipes 14 in an annular array, and the circulating airflow mechanism 2 includes a circulating air duct 21 and an air outlet duct 22. One end of the air outlet duct 22 is fixedly connected to one end of the circulating air duct 21, and a plurality of cyclone barrels 23 are fixedly connected to the bottom of the air outlet duct 22 in an annular array. The outer side of the cyclone barrel 23 is fixedly connected to one end of the connecting pipe 14, and the bottom end of the cyclone barrel 23 is fixedly connected to the top of the assembly plate 31. The outer wall of the body 11 is fixedly connected to one end of the air inlet duct 12.

[0028] In this embodiment, the high-efficiency rotor powder classifier is mainly composed of a powder classifier mechanism 1, a circulating airflow mechanism 2 and a discharging mechanism 3. The circulating airflow mechanism 2 is connected to a circulating fan. When the device is in use, a driving motor 16 drives a driving wheel 17 to rotate, and the driving wheel 17 drives a driven wheel 18 and a rotating rod 111 to rotate through a chain. A drip assembly 118 is provided at the lower part of the rotating rod 111. The drip assembly 118 allows airflow to pass through and facilitates the falling of coarse powder. A plurality of cyclones 23 for separating fine powder from air are evenly arranged on the periphery of the machine body 11. The airflow generated by the circulating fan enters the machine body 11 through the air inlet pipe 12, and finally returns to the circulating fan through the circulating air pipe 21, so as to form a ring-classified airflow.

[0029] An inner and outer cone, i.e., a powder discharge pipe 32 and an inner shell 36, are provided at the lower part of the tangential inlet of the air inlet pipe 12. The material enters from the feed pipe 15 and is scattered into the rising airflow in the feed hopper 110 through the dispersion pipe 115. The powder medium fragments in the material overcome the resistance of the rising airflow under the action of gravity and fall down, and are discharged from the slag discharge port. The airflow carrying the powder rises to the classification part, and enters the upper rotor 113 and the lower rotor 114 through the guide vanes in the machine body 11 for classification. The guide vanes can make the airflow and the powder particles produce a rotary motion for pre-classification, and capture the coarse particles thrown out, and can also make the airflow speed uniformly distributed over the height of the entire rotor. The coarse particles captured by the guide vanes fall into the inner shell 36 and are discharged from the coarse powder outlet, while the fine particles and the airflow pass through the rotor blades into the middle part of the lower rotor 114, and are sent to the powder discharge pipe 32 from the fine powder outlet, and finally discharged from the discharge port 37. The inner shell 36 of the device collects the coarse powder, and the powder discharge pipe 32 collects the fine powder.

[0030] By improving the powder selection mechanism 1, a dispersion motor 19, a dispersion tube 115 and a gear rod 117 are added to the top of the shell 13. The dispersion motor 19 drives the gear rod 117 to rotate, and the outer wall of the gear rod 117 engages with the inner edge of the dispersion tube 115, thereby driving the dispersion tube 115 to rotate at a uniform speed. A plurality of penetrating feed holes 116 are arranged at the bottom of the dispersion tube 115. When the material enters the feed tube 15, it falls into the dispersion tube 115 from the feed tube 15. The dispersion tube 115 rotates at a uniform speed, so that the material in the dispersion tube 115 is evenly dispersed in the feed hopper 110 through the plurality of feed holes 116 at the bottom. The powder selection mechanism 1 can evenly feed the material into the rotor powder selection machine, so that the material can be well dispersed in the initial stage, and the material entering the body 11 is prevented from accumulating in certain areas, so that the material in the subsequent body 11 can be fully dispersed under the action of the rotor rotation and airflow, thereby improving the powder selection effect in the lithium battery diaphragm processing process.

[0031] Embodiment 2: Figure 1 , Figure 2 , Figure 3 , Figure 7 and Figure 8As shown, the discharging mechanism 3 includes an assembly plate 31 and a powder discharging pipe 32, and the discharging mechanism 3 also includes a scraping motor 34, an active rod 35, a belt 38, a driven rod 39, a gear plate 310 and a movable ring 311. The output end of the scraping motor 34 is fixedly connected to the bottom of the active rod 35, the active rod 35 is connected to the driven rod 39 through the belt 38, the bottom end of the driven rod 39 is welded to the top of the gear plate 310, the outer edge of the movable ring 311 is rotatably connected to the top inner wall of the powder discharging pipe 32, and the top of the movable ring 311 is fixedly connected to The gear ring 314, the inner edge of the gear ring 314 is meshed with the outer wall of the gear plate 310, the bottom of the movable ring 311 is fixedly connected with the fixed plate 312, and the outer side of the fixed plate 312 is fixedly connected with the scraper 313, the top of the powder discharge pipe 32 is fixedly installed with the bottom of the assembly plate 31, the top wall of the assembly plate 31 is fixedly connected with the inner shell 36, the top of the driven rod 39 is rotatably connected with the top of the assembly plate 31, the bottom of the powder discharge pipe 32 is provided with a discharge port 37, and the outer side of the top of the powder discharge pipe 32 is fixedly installed with a support frame 33.

[0032] In this embodiment, by improving the discharging mechanism 3, the scraper motor 34 can drive the active rod 35 and the driven rod 39 to rotate, thereby driving the gear plate 310 at the bottom of the assembly plate 31 to rotate, and the outer wall of the gear plate 310 is meshed with the inner wall of the gear ring 314, so that the gear ring 314 and the movable ring 311 rotate. When the movable ring 311 rotates, it can drive the fixed plate 312 and the scraper 313 to slide along the inner wall of the powder discharge pipe 32, and the scraper 313 can scrape off the fine powder stuck on the inner wall of the powder discharge pipe 32. During the powder selection process, the scraper 313 can automatically scrape off the fine powder stuck on the inner wall of the powder discharge pipe 32, so as to avoid the fine powder constantly sticking to the inner wall of the powder discharge pipe 32 during the powder selection process, and to avoid the fine powder on the inner wall of the powder discharge pipe 32 from accumulating and causing the discharge port 37 to be blocked. At the same time, there is no need for the operator to manually clean it later, thereby reducing the equipment downtime and maintenance time and improving production continuity.

[0033] The use method and working principle of this device: The circulating airflow mechanism 2 of the high-efficiency rotor powder classifier is connected to the circulating fan. When the device is in use, the driving motor 16 drives the driving wheel 17 to rotate, and the driving wheel 17 drives the driven wheel 18 and the rotating rod 111 to rotate through the chain. The material enters from the feed pipe 15 and is scattered into the rising airflow in the feed hopper 110 through the dispersion pipe 115. The powder medium fragments in the material overcome the resistance of the rising airflow under the action of gravity and fall down, and are discharged from the slag discharge port. The airflow carrying the powder rises to the classification part and passes through the body 11. The guide vanes enter the upper rotor 113 and the lower rotor 114 for classification. The guide vanes can make the airflow and powder particles produce a rotary motion for pre-classification and capture the coarse particles thrown out. The airflow velocity can also be evenly distributed over the height of the entire rotor. The coarse particles captured by the guide vanes fall into the inner shell 36 and are discharged from the coarse powder outlet, while the fine particles and the airflow pass through the rotor blades and enter the middle of the lower rotor 114, and are sent to the powder outlet pipe 32 from the fine powder outlet, and finally discharged from the discharge port 37. The inner shell 36 of the device collects coarse powder, and the powder outlet pipe 32 collects fine powder.

[0034] By adding a dispersion motor 19, a dispersion tube 115 and a gear rod 117 to the top of the shell 13, the dispersion motor 19 drives the gear rod 117 to rotate, thereby driving the dispersion tube 115 to rotate at a uniform speed. A plurality of penetrating feed holes 116 are provided at the bottom of the dispersion tube 115. When the material enters the feed tube 15, it falls from the feed tube 15 into the dispersion tube 115. The dispersion tube 115 rotates at a uniform speed, so that the material in the dispersion tube 115 is evenly dispersed in the feed hopper 110 through the plurality of feed holes 116 at the bottom. The powder selection mechanism 1 can evenly feed the material into the rotor powder selection machine, avoid the accumulation of the material entering the body 11 in certain areas, and improve the powder selection effect in the processing of lithium battery diaphragms;

[0035] The scraper motor 34 can drive the active rod 35 and the driven rod 39 to rotate, thereby driving the gear plate 310 at the bottom of the assembly plate 31 to rotate, so that the gear ring 314 and the movable ring 311 can rotate. When the movable ring 311 rotates, the fixed plate 312 and the scraper 313 can be driven to slide along the inner wall of the powder discharge pipe 32. The scraper 313 can scrape off the fine powder stuck on the inner wall of the powder discharge pipe 32. During the powder selection process, the scraper 313 can automatically scrape off the fine powder stuck on the inner wall of the powder discharge pipe 32 to prevent the fine powder from constantly sticking to the inner wall of the powder discharge pipe 32 during the powder selection process, and to prevent the fine powder on the inner wall of the powder discharge pipe 32 from accumulating and causing the discharge port 37 to be blocked.

[0036] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An improved high-efficiency rotor powder separator, comprising a powder separator (1), a circulating airflow mechanism (2) and a discharging mechanism (3), wherein the bottom end of the powder separator (1) is fixedly mounted on the top end of the discharging mechanism (3), the powder separator (1) comprises a body (11), an air inlet pipe (12), a shell (13), a feed pipe (15), a drive motor (16), a rotating rod (111) and a spreading plate (112), the bottom end of the shell (13) is welded to the top end of the body (11), and a feed hopper (110) is fixedly mounted inside the shell (13), and the discharging mechanism (3) comprises an assembly plate (31) and a powder discharge pipe (32), characterized in that: The powder selection mechanism (1) further comprises a dispersion motor (19), a dispersion pipe (115) and a gear rod (117); the bottom end of the dispersion motor (19) is fixedly mounted on the top of the housing (13); the output end of the dispersion motor (19) is fixedly connected to the top of the gear rod (117); the top of the dispersion pipe (115) is rotatably connected to the top wall of the housing (13); a plurality of feed holes (116) are provided in an annular array at the bottom of the dispersion pipe (115); the outer wall of the bottom end of the gear rod (117) is meshed with the outer wall of the dispersion pipe (115); the discharging mechanism (3) further comprises a scraping motor (34), an active rod (35), a belt (38), a driven rod (39), a gear plate (39); 10) and a movable ring (311), the output end of the scraper motor (34) is fixedly connected to the bottom of the active rod (35), the active rod (35) is connected to the driven rod (39) through a belt (38), the bottom end of the driven rod (39) is welded to the top of the gear plate (310), the outer edge of the movable ring (311) is rotatably connected to the top inner wall of the powder outlet pipe (32), and the top of the movable ring (311) is fixedly connected to a gear ring (314), the inner edge of the gear ring (314) is meshed with the outer wall of the gear plate (310), the bottom of the movable ring (311) is fixedly connected to a fixed plate (312), and the outer side of the fixed plate (312) is fixedly connected to a scraper (313).

2. The improved high-efficiency rotor powder separator according to claim 1 is characterized in that: The top of the powder outlet pipe (32) is fixedly mounted to the bottom of the assembly plate (31), the top wall of the assembly plate (31) is fixedly connected to the inner shell (36), and the top end of the driven rod (39) is rotatably connected to the top end of the assembly plate (31).

3. The improved high-efficiency rotor powder concentrator according to claim 1 is characterized in that: A discharge port (37) is provided at the bottom of the powder discharge pipe (32), and a support frame (33) is fixedly mounted on the outer side of the top end of the powder discharge pipe (32).

4. The improved high-efficiency rotor powder concentrator according to claim 1 is characterized in that: The bottom output end of the driving motor (16) is fixedly connected to a driving wheel (17), the top of the rotating rod (111) is fixedly connected to a driven wheel (18), and the bottom end of the rotating rod (111) is fixedly connected to the top of the material spreading plate (112).

5. The improved high-efficiency rotor powder concentrator according to claim 4 is characterized in that: An upper rotor (113) is arranged inside the machine body (11), the top outer edge of the material spreading plate (112) is rotatably connected to the bottom end of the upper rotor (113), and the bottom of the material spreading plate (112) is fixedly connected to a lower rotor (114), and the bottom end of the machine body (11) is fixedly connected to a drip assembly (118).

6. The improved high-efficiency rotor powder concentrator according to claim 1 is characterized in that: The bottom of the machine body (11) is fixedly mounted on the top of the assembly plate (31), and a plurality of connecting pipes (14) are fixedly connected to the outer wall of the shell (13) in an annular array.

7. The improved high-efficiency rotor powder separator according to claim 6 is characterized in that: The circulating airflow mechanism (2) comprises a circulating air duct (21) and an air outlet duct (22); one end of the air outlet duct (22) is fixedly connected to one end of the circulating air duct (21); and a plurality of cyclone cylinders (23) are fixedly connected in an annular array at the bottom of the air outlet duct (22).

8. The improved high-efficiency rotor powder concentrator according to claim 7 is characterized in that: The outer side of the cyclone barrel (23) is fixedly connected to one end of the connecting pipe (14), and the bottom end of the cyclone barrel (23) is fixedly connected to the top of the assembly plate (31), and the outer wall of the machine body (11) is fixedly connected to one end of the air inlet pipe (12).

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