Metal powder grinding and screening device

Abstract

The application discloses a metal powder grinding and screening device, and relates to the technical field of metal powder processing.The technical scheme is as follows: the device comprises a shell, a motor fixedly connected to the shell, a support frame fixedly connected to the outer wall of the shell, a feeding pipe arranged on the top of the shell, a discharging pipe arranged on the bottom of the shell, a grinding area arranged in the shell and communicated with the feeding pipe, a screening area arranged between the grinding area and the discharging pipe and used for screening the metal powder, a rotating part rotatably connected to the shell, the rotating part being fixedly connected to the motor, the grinding area and the screening area being connected to each other through the rotating part, the rotating part being arranged in the grinding area, the screening area and the discharging pipe, a stirring part arranged on the rotating part, the stirring part being arranged in the screening area, a storage assembly arranged on the discharging pipe, the storage assembly being sleeved with the screening area and the rotating part, and a recycling assembly arranged on one side of the storage assembly.The application realizes the integration of grinding and screening, and improves the work efficiency.

Description

Technical Field

[0001] This invention relates to the field of metal powder processing technology, and more specifically to a metal powder grinding and sieving device. Background Technology

[0002] Metal powder refers to a group of metal particles with a size of less than 1 mm. It includes single metal powders, alloy powders, and powders of certain refractory compounds with metallic properties, and is the main raw material for powder metallurgy.

[0003] Currently, when processing metal powder, workers typically use grinding machines to grind and pulverize it. However, all types of grinding machines on the market have certain drawbacks, such as limited functionality. During the grinding process, many coarse metal particles remain that are not ground into powder. If these particles are not sieved and then re-ground, it will greatly increase the workload, requiring the use of sieving devices and manpower to complete the sieving work before re-grinding the sieved particles. This is time-consuming, labor-intensive, and reduces work efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a metal powder grinding and sieving device, which has the advantage of integrating grinding and sieving, thereby improving work efficiency.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution:

[0006] A metal powder grinding and sieving device includes a housing and a motor fixedly connected to the housing. A support frame is fixedly connected to the outer wall of the housing. A feed pipe is provided at the top of the housing and a discharge pipe is provided at the bottom of the housing. A grinding zone is provided inside the housing for grinding metal powder, and the grinding zone is connected to the feed pipe.

[0007] The screening zone, located between the grinding zone and the discharge pipe, is used for screening metal powders.

[0008] A rotating component is rotatably connected inside the housing. The rotating component is fixedly connected to the motor. The grinding zone and the screening zone are connected to each other through the rotating component. The rotating component is located in the grinding zone, the screening zone and the discharge pipe. A stirring component is fixedly connected to the rotating component. The stirring component is located in the screening zone. A receiving component is threadedly connected to the discharge pipe for collecting metal powder. The receiving component is sleeved with the screening zone and the rotating component. A recycling component is located on one side of the receiving component for recycling metal powder. The recycling component is connected to the grinding zone.

[0009] Further configuration: The grinding area includes a first grinding block fixedly connected to the inner wall of the housing. A first grinding stone fixedly connected to a rotating component is provided on one side of the first grinding block. The first grinding stone is rotatably connected inside the housing. A grinding groove is opened in the first grinding stone. The grinding groove is connected to the recycling component. A second grinding block fixedly connected to the first grinding block is provided in the grinding groove. A second grinding stone fixedly connected to the rotating component is provided on one side of the second grinding block.

[0010] Further configuration: The rotating component includes a hollow shaft rotatably connected inside the housing. The second grinding stone and the screening zone are interconnected via the shaft. The shaft is fixedly connected to the stirring component. One end of the shaft is fixedly connected to the motor. The other end of the shaft is provided with two first connecting rods fixedly connected to it. The first connecting rods are rotatably connected to the discharge pipe. The inside of the shaft is provided with a discharge wall fixedly connected to it. A circular groove is opened on the outer wall of the shaft, and the circular groove is connected to one side of the discharge wall. A collection tray is fixedly connected to the shaft for guiding metal powder into the circular groove. The collection tray is fixedly connected to the first grinding stone. The end of the shaft facing the ground is sleeved with the storage component.

[0011] Further configuration: The stirring component includes several stirring rods fixedly connected to the rotating shaft. Each stirring rod has a rotating groove at one end, and each rotating groove is provided with a ball bearing that is rotatably connected to it. The ball bearings are in contact with the screening area.

[0012] Further configuration: The screening area includes a filter inner ring that contacts the ball bearings. The filter inner ring is fixedly connected to the rotating shaft. One side of the outer wall of the filter inner ring has several through holes for screening metal powder. The bottom of the filter inner ring has several first openings. Each first opening has a matching baffle plate, which is rotatably connected to the first opening. Each baffle plate has a rotating rod rotatably connected to it. The outer wall of the rotating shaft has a driving component for driving the rotating rods. The housing has a first rotating box rotatably connected to it. The filter inner ring is fixedly connected to the first rotating box. The bottom of the first rotating box has several second openings for feeding metal powder. One side of the second opening has a feeding ring fixedly connected to the first rotating box. The feeding ring is sleeved with the receiving component. The outer wall of the feeding ring has several second connecting rods fixedly connected to it, which are rotatably connected to the discharge pipe.

[0013] Further configuration: The driving component includes a ring that is slidably connected to the outer wall of the rotating shaft, and rotating rods that are rotatably connected to the ring. Below the ring are a first cylinder and a second cylinder that are fixedly connected to it, and the first cylinder and the second cylinder are fixedly connected to the rotating shaft.

[0014] Further configuration: The receiving component includes a first material box threadedly connected to the discharge pipe, a second material box detachably installed inside the first material box, the second material box being sleeved with the discharge ring, a third material box detachably installed inside the second material box, the third material box being sleeved with the rotating shaft, a first recycling pipe detachably installed on one side of the first material box, a second recycling pipe detachably installed on one side of the second material box, and the first recycling pipe and the second recycling pipe being respectively connected to the recycling component.

[0015] Further configuration: The recycling component includes a tee joint that is threadedly connected to the first recycling pipe and the second recycling pipe. The tee joint is provided with a third recycling pipe that is threadedly connected to it. The third recycling pipe is provided with a pneumatic dust conveying pump that is fixedly connected to the housing for extracting metal powder. The pneumatic dust conveying pump is provided with a fourth recycling pipe. One end of the fourth recycling pipe penetrates the housing and is connected to the grinding tank.

[0016] Further configuration: The first and second recovery pipes are each equipped with a discharge valve to control the discharge from the first and second recovery pipes.

[0017] Further features: The baffle plate is equipped with a locking block that is fixedly connected to it, and the lower part of the filter inner ring is equipped with a slot that matches the locking block to secure the baffle plate.

[0018] In summary, the present invention has the following beneficial effects:

[0019] (1) In this invention, the shell is provided with a grinding zone, a screening zone and a storage component from top to bottom. The metal powder enters the grinding zone from the top of the shell and is ground into metal powder of the required size. Then the metal powder enters the screening zone for screening to screen out the required metal powder particles. In the screening process, the metal powder can also be dispersed and stirred by a stirring component to prevent the metal powder from not being screened out. Finally, the shell enters the recycling component to recycle the screened metal powder.

[0020] (2) In this invention, a pneumatic dust conveying pump is provided on the outside of the shell. The pneumatic dust conveying pump sends the metal powder that has entered the recycling component back into the grinding zone for secondary grinding through the first recycling pipe, the second recycling pipe, the third recycling pipe, the fourth recycling pipe and the three-way connector. The secondary grinding is carried out by the second grinding stone in the first grinding stone. Then, the metal powder that has been ground for secondary grinding is sent back into the storage component through the collection plate, the circular groove on the rotating shaft and the material discharge wall in the rotating shaft.

[0021] (3) In this invention, since the rotating shaft is hollow, and there is a circular groove and a collection plate on the rotating shaft, the metal powder after being ground by the second grinding stone is collected and taken out from the inside by the rotating shaft. Secondly, the material feeding wall inside the rotating shaft facilitates the feeding of metal powder.

[0022] (4) In this invention, by pushing the first cylinder and the second cylinder to drive the ring to slide up and down on the rotating shaft, the ring drives the rotating rod to move, and the rotating rod drives the baffle plate to move, thereby blocking and opening the first opening, so as to remove the metal powder that has not been screened out. Secondly, the baffle plate can be clamped on the first opening by the clamping block on the baffle plate and the groove on the filter inner ring.

[0023] (5) In this invention, the first material box in the storage component is threadedly connected to the discharge pipe, which facilitates the collection of metal powder after screening in the screening area; the second material box is sleeved with the discharge ring, which facilitates the collection of metal powder that has not been screened out in the inner filter ring; and the third material box can collect metal powder in the rotating shaft. Attached Figure Description

[0024] The invention will be further described below with reference to the accompanying drawings.

[0025] Figure 1 This is a schematic diagram of a metal powder grinding and sieving device.

[0026] Figure 2 This is a schematic diagram of the internal structure of a metal powder grinding and sieving device.

[0027] Figure 3 This is a schematic diagram of the rotating shaft structure;

[0028] Figure 4 This is a schematic diagram of the baffle plate structure;

[0029] Figure 5 This is a schematic diagram of the stirring component structure;

[0030] Figure 6 This is a schematic diagram of the storage component structure;

[0031] Figure 7 This is a schematic diagram of the recycling component structure;

[0032] In the diagram, 1. Shell; 11. Grinding zone; 12. Screening zone; 13. Rotating component; 131. Rotating shaft; 132. First connecting rod; 133. Circular groove; 134. Collection tray; 135. Inner filter ring; 1351. First opening; 1352. Baffle plate; 1353. Slot; 1354. Clamping block; 1355. Rotating rod; 1356. Circular ring; 1357. First cylinder; 1358. Second cylinder; 136. Through hole; 14. First grinding block; 15. First grinding stone; 16. Grinding groove; 17. Second grinding block; 171. Stirring rod; 17 2. Rotating groove; 173. Ball bearing; 18. Second grinding stone; 19. Feeding wall; 110. First rotating box; 111. Second opening; 112. Feeding ring; 113. Second connecting rod; 2. Motor; 3. Feeding pipe; 4. Discharge pipe; 5. Storage assembly; 51. First material box; 52. Second material box; 53. Third material box; 6. Recycling assembly; 61. First recycling pipe; 62. Second recycling pipe; 63. T-joint; 64. Pneumatic dust conveying pump; 65. Third recycling pipe; 66. Fourth recycling pipe; 67. Discharge valve; 7. Support frame. Detailed Implementation

[0033] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0034] The technical solution adopted in this invention is:

[0035] A metal powder grinding and sieving device includes a housing 1 and a motor 2 fixedly connected to the housing 1, such as Figure 1 As shown, a support frame 7 is fixedly connected to the outer wall of the housing 1, a feed pipe 3 is provided at the top of the housing 1, a discharge pipe 4 is provided at the bottom of the housing 1, and a grinding zone 11 is provided inside the housing 1 for grinding metal powder, and the grinding zone 11 is connected to the feed pipe 3.

[0036] like Figure 2 As shown, the screening zone 12 is located between the grinding zone 11 and the discharge pipe 4, and is used to screen metal powder.

[0037] like Figure 1 As shown, Figure 2As shown, a rotating component 13 is rotatably connected inside the housing 1. The rotating component 13 is fixedly connected to the motor 2. The grinding zone 11 and the screening zone 12 are interconnected via the rotating component 13. The rotating component 13 is located in the grinding zone 11, the screening zone 12, and the discharge pipe 4. The grinding zone 11 includes a first grinding block 14 fixedly connected to the inner wall of the housing 1. A first grinding stone 15 fixedly connected to the rotating component 13 is provided on the inner side of the first grinding block 14. The first grinding stone 15 is rotatably connected inside the housing 1. A grinding groove 16 is formed in the first grinding stone 15. A second grinding block 17 fixedly connected to the first grinding block 14 is provided in the grinding groove 16. A second grinding stone 18 fixedly connected to the rotating component 13 is provided on one side of the second grinding block 17. The rotating component 13 is driven to rotate by the motor 2, and the rotating component 13 drives the first grinding stone 15 and the second grinding stone 18 to rotate. A stirring component fixedly connected to the rotating component 13 is provided, and the stirring component is located in the screening zone 12.

[0038] like Figure 1 As shown, Figure 2 As shown and Figure 3 As shown, the rotating component 13 includes a rotating shaft 131 rotatably connected inside the housing 1. The rotating shaft 131 is hollow. The first grinding block 14 and the screening area 12 are connected to each other through the rotating shaft 131. The rotating shaft 131 is fixedly connected to the stirring component. The upper end of the rotating shaft 131 is fixedly connected to the motor 2. The lower end of the rotating shaft 131 is provided with two first connecting rods 132 fixedly connected thereto. The first connecting rods 132 are rotatably connected to the discharge pipe 4. The interior of the rotating shaft 131 is provided with a discharge wall 19 fixedly connected thereto. A circular groove 133 is opened on the outer wall of the rotating shaft 131, and the circular groove 133 communicates with the outer side of the discharge wall 19. A collection plate 134 is provided on the rotating shaft 131 and fixedly connected thereto, which is used to guide metal powder into the circular groove 133. The collection plate 134 is fixedly connected to the first grinding stone 15. By fixing the collection plate 134 to the first grinding stone 15, it is easy to collect the metal powder between the first grinding stone 15 and the second grinding stone 18.

[0039] like Figure 2 As shown, Figure 4 As shown and Figure 5As shown, the discharge pipe 4 is equipped with a receiving assembly 5 threadedly connected to it for collecting metal powder. The receiving assembly 5 is sleeved with the screening zone 12 and the rotating component 13 respectively. A recycling assembly 6 is provided on the upper side of the receiving assembly 5 for recycling metal powder. The recycling assembly 6 is connected to the grinding tank 16 in the grinding zone 12 for recycling metal powder into the grinding tank 16 for secondary grinding. The stirring component includes several stirring rods 171 fixedly connected to the rotating shaft 131. The left end of each stirring rod 171 is provided with a rotating groove 172. The rotating groove 172 is provided with ball bearings 173 that are rotatably connected to it, and the ball bearings 173 are respectively connected to the screening area 12. The screening area 12 includes a filter inner ring 135 that is connected to the ball bearings 173. The filter inner ring 135 is fixedly connected to the rotating shaft 131. The front side of the outer wall of the filter inner ring 135 has several through holes 136 for screening metal powder. By opening the through holes 136 on the front side of the filter inner ring 135, the metal powder can be screened out. The rear side of the filter inner ring 135 does not have through holes 136. 6. The filter inner ring 135 facilitates the dispersing and stirring of metal powder within it. Several first openings 1351 are provided at the bottom of the filter inner ring 135. Each first opening 1351 contains a matching baffle plate 1352, which is rotatably connected within the first opening 1351. A clamping block 1354 is fixedly connected to the left end of each baffle plate 1352. A slot 1353 matching the clamping block 1354 is provided at the bottom of the filter inner ring 135 for adjusting the position of the baffle plate 1352. The clamping mechanism is secured. The baffle plate 1352 is provided with rotating rods 1355 that are rotatably connected to it. The outer wall of the rotating shaft 131 is provided with a driving component for driving the rotating rods 1355. The driving component includes a ring 1356 that is slidably connected to the outer wall of the rotating shaft 131. The rotating rods 1355 are rotatably connected to the ring 1356. Below the ring 1356 are a first cylinder 1357 and a second cylinder 1358 that are fixedly connected to it. The first cylinder 1357 and the second cylinder 1358 are fixedly connected to the rotating shaft 131.

[0040] like Figure 2 As shown, the housing 1 is provided with a first rotating box 110 rotatably connected thereto. The filter inner ring 135 is fixedly connected inside the first rotating box 110. Several second openings 111 are provided below the first rotating box 110 for feeding metal powder. The inner side of the second opening 111 is provided with a feeding ring 112 fixedly connected to the first rotating box 110. The feeding ring 112 is sleeved with the receiving component 5. Several second connecting rods 113 are fixedly connected to the outer wall of the feeding ring 112, and the second connecting rods 113 are rotatably connected inside the discharge pipe 4.

[0041] like Figure 2 As shown, Figure 6 As shown and Figure 7As shown, the receiving component 5 includes a first material box 51 threadedly connected to the discharge pipe 4. A second material box 52 is detachably installed inside the first material box 51. The second material box 52 is sleeved with the discharge ring 112, which allows the discharge ring 112 to rotate within the second material box 52. A third material box 53 is detachably installed inside the second material box 52. The third material box 53 is sleeved with the rotating shaft 131, which allows the rotating shaft 131 to rotate within the third material box 53. A first recycling pipe 61 is detachably installed on the lower side of the first material box 51, and a second recycling pipe 62 is detachably installed on the lower side of the second material box 52. The first recycling pipe 61 and the second recycling pipe 62 are respectively connected to the recycling component 6.

[0042] like Figure 1 As shown, Figure 7 As shown, the recycling component 6 includes a three-way connector 63 threadedly connected to the first recycling pipe 61 and the second recycling pipe 62. The three-way connector 63 is provided with a third recycling pipe 65 threadedly connected to it. The third recycling pipe 65 is provided with a pneumatic dust conveying pump 64 fixedly connected to the housing 1 for extracting metal powder. The pneumatic dust conveying pump 64 is provided with a fourth recycling pipe 66. One end of the fourth recycling pipe 66 passes through the housing 1 and the first grinding block 14, and the upper end of the fourth recycling pipe 66 communicates with the grinding tank 16. The first recycling pipe 61 and the second recycling pipe 62 are respectively provided with discharge valves 67 for controlling the discharge of the first recycling pipe 61 and the second recycling pipe 62.

[0043] Working principle:

[0044] When metal powder needs to be processed, the operator starts motor 2, which drives the rotating shaft 131 fixedly connected to it to rotate inside the housing 1. The rotating shaft 131 drives the first grinding stone 15 fixedly connected to it to rotate inside the housing 1. The metal powder enters the housing 1 through the feed pipe 3. The metal powder inside the housing 1 is ground by the action of the first grinding stone 15 and the first grinding block 14. The ground metal powder falls into the filter inner ring 135. Since the filter inner ring 135 is fixedly connected to the rotating shaft 131, the rotating shaft 131 drives the filter inner ring 135 to rotate. At this time, the through hole 136 on the filter inner ring 135 screens out the ground metal powder that meets the requirements from the filter inner ring 135. The screened metal powder enters the first rotating box 110. Through the second opening 111 on the first rotating box 110, the metal powder enters the discharge pipe 4. Through the discharge pipe 4, the metal powder enters the first material box 51, thereby realizing the grinding and screening of metal powder.

[0045] While the rotating shaft 131 rotates, it drives several stirring rods 171 fixedly connected to it to rotate within the filter inner ring 135, thereby stirring and dispersing the metal powder within the filter inner ring 135. Furthermore, a rotating groove 172 is provided on the left end of the stirring rod 171, and a ball bearing 173 rotates within the rotating groove 172. The ball bearing 173 contacts the inner wall of the filter inner ring 135, which can provide a certain collision effect on the inner wall of the filter inner ring 135, preventing the metal powder from clogging the through hole 136 on the filter inner ring 135. Moreover, the filter inner ring 135 also prevents the metal powder from clogging the through hole 136 during the rotation process.

[0046] When it is necessary to remove the metal powder that has not been screened out from the inner filter ring 135, the first cylinder 1357 and the second cylinder 1358, which are fixedly connected to the rotating shaft 131, move. The movement of the first cylinder 1357 and the second cylinder 1358 causes the ring 1356, which is fixedly connected to them, to slide on the rotating shaft 131. The movement of the ring 1356 causes the rotating rod 1355, which is rotatably connected to it, to move. The movement of the rotating rod 1355 causes the baffle plate 1352, which is rotatably connected to it, to rotate within the first opening 1351, thereby achieving... The baffle plate 1352 is driven by the clamping block 1354 on the baffle plate 1352 and the slot 1353 below the filter inner ring 135 that matches the clamping block 1354. This can limit the movement of the baffle plate 1352. When the baffle plate 1352 is opened, the metal powder in the filter inner ring 135 will enter the feeding ring 112 through the first opening 1351, and then pass through the second material box 52 that is sleeved with the feeding ring 112. This is to collect the metal powder that has not been screened out in the filter inner ring 135.

[0047] When it is necessary to perform secondary grinding on the metal powder in the first material box 51 and the second material box 52, the pneumatic dust conveying pump 64 operates. Since the first recovery pipe 61 is connected to the first material box 51 and the second recovery pipe 62 is connected to the second material box 52, and the first recovery pipe 61 and the second recovery pipe 62 are connected to the pneumatic dust conveying pump 64 through the three-way connector 63 and the third recovery pipe 65, the pneumatic dust conveying pump draws the metal powder from the first material box 51 and the second material box 52 and transfers it again to the grinding tank 16 in the housing 1 through the fourth recovery pipe 66, thereby performing secondary grinding on the metal powder. The ground metal powder is collected through the collection plate 134, and the collected metal powder enters the rotating shaft 131 through the circular groove 133 on the rotating shaft 131. Then, the metal powder enters the third material box 53, which is connected to the rotating shaft 131, through the material discharge wall 19 in the rotating shaft 131, thereby realizing the collection of the metal powder after secondary grinding.

[0048] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention shall fall within the scope of the invention.

Claims

1. A metal powder grinding and sieving device, comprising a housing (1) and a motor (2) fixedly connected to the housing (1), characterized in that: The outer wall of the shell (1) is fixedly connected to a support frame (7), the top of the shell (1) is provided with a feed pipe (3), the bottom of the shell (1) is provided with a discharge pipe (4), and the shell (1) is provided with a grinding area (11) for grinding metal powder, and the grinding area (11) is connected to the feed pipe (3); The screening zone (12) is located between the grinding zone (11) and the discharge pipe (4) and is used to screen metal powder; A rotating component (13) is rotatably connected inside the housing (1). The rotating component (13) is fixedly connected to the motor (2). The grinding zone (11) and the screening zone (12) are connected to each other through the rotating component (13). The rotating component (13) is located in the grinding zone (11), the screening zone (12) and the discharge pipe (4) respectively. The rotating component (13) is provided with a stirring component fixedly connected to it. The stirring component is located in the screening zone (12). The discharge pipe (4) is provided with a storage component (5) threadedly connected to it for collecting metal powder. The storage component (5) is sleeved with the screening zone (12) and the rotating component (13) respectively. A recycling component (6) is provided on one side of the storage component (5) for recycling metal powder. The recycling component (6) is connected to the grinding zone (11). The grinding area (11) includes a first grinding block (14) fixedly connected to the inner wall of the housing (1). A first grinding stone (15) fixedly connected to the rotating part (13) is provided on one side of the first grinding block (14). The first grinding stone (15) is rotatably connected inside the housing (1). A grinding groove (16) is opened in the first grinding stone (15). The grinding groove (16) is connected to the recycling component (6). A second grinding block (17) fixedly connected to the first grinding block (14) is provided in the grinding groove (16). A second grinding stone (18) fixedly connected to the rotating part (13) is provided on one side of the second grinding block (17). The rotating component (13) includes a rotating shaft (131) rotatably connected inside the housing (1). The rotating shaft (131) is hollow. The second grinding stone (18) and the screening zone (12) are connected to each other through the rotating shaft (131). The rotating shaft (131) is fixedly connected to the stirring component. One end of the rotating shaft (131) is fixedly connected to the motor (2). The other end of the rotating shaft (131) is provided with two first connecting rods (132) fixedly connected to it. The first connecting rods (132) are rotatably connected inside the discharge pipe (4). The shaft (131) has a feeding wall (19) fixedly connected to it inside. A circular groove (133) is opened on the outer wall of the shaft (131), and the circular groove (133) is connected to one side of the feeding wall (19). A collection plate (134) is fixedly connected to the shaft (131) for guiding metal powder into the circular groove (133). The collection plate (134) is fixedly connected to the first grinding stone (15). The end of the shaft (131) facing the ground is sleeved with the storage component (5).

2. The metal powder grinding and sieving device according to claim 1, characterized in that: The stirring component includes several stirring rods (171) fixedly connected to the rotating shaft (131). One end of each stirring rod (171) is provided with a rotating groove (172). Each rotating groove (172) is provided with a ball bearing (173) that is rotatably connected to it, and the ball bearing (173) is in contact with the screening area (12).

3. The metal powder grinding and sieving device according to claim 2, characterized in that: The screening area (12) includes a filter inner ring (135) in contact with the ball (173). The filter inner ring (135) is fixedly connected to the rotating shaft (131). A plurality of through holes (136) for screening metal powder are opened on one side of the outer wall of the filter inner ring (135). A plurality of first openings (1351) are opened below the filter inner ring (135). A baffle plate (1352) adapted to it is provided in each of the first openings (1351), and the baffle plate (1352) is rotatably connected in the first opening (1351). A rotating rod (1355) rotatably connected to it is provided on each of the baffle plates (1352). The outer wall of the rotating shaft (131) is provided with The driving component for driving the rotating rod (1355) has a first rotating box (110) rotatably connected to it inside the housing (1). The filter inner ring (135) is fixedly connected inside the first rotating box (110). Several second openings (111) are opened below the first rotating box (110) for feeding metal powder. A feeding ring (112) is fixedly connected to the first rotating box (110) on one side of the second opening (111). The feeding ring (112) is sleeved with the storage component (5). Several second connecting rods (113) are fixedly connected to the outer wall of the feeding ring (112), and the second connecting rods (113) are rotatably connected inside the discharge pipe (4).

4. The metal powder grinding and sieving device according to claim 3, characterized in that: The driving component includes a ring (1356) slidably connected to the outer wall of the rotating shaft (131), a rotating rod (1355) rotatably connected to the ring (1356), and a first cylinder (1357) and a second cylinder (1358) fixedly connected to the ring (1356) below it. The first cylinder (1357) and the second cylinder (1358) are fixedly connected to the rotating shaft (131).

5. A metal powder grinding and sieving device according to claim 3, characterized in that: The storage component (5) includes a first material box (51) threadedly connected to the discharge pipe (4), a second material box (52) detachably installed inside the first material box (51), the second material box (52) being sleeved with the discharge ring (112), a third material box (53) detachably installed inside the second material box (52), the third material box (53) being sleeved with the rotating shaft (131), a first recycling pipe (61) detachably installed on one side of the first material box (51), a second recycling pipe (62) detachably installed on one side of the second material box (52), and the first recycling pipe (61) and the second recycling pipe (62) being respectively connected to the recycling component (6).

6. The metal powder grinding and sieving device according to claim 5, characterized in that: The recycling component (6) includes a three-way connector (63) threadedly connected to the first recycling pipe (61) and the second recycling pipe (62). The three-way connector (63) is provided with a third recycling pipe (65) threadedly connected to it. The third recycling pipe (65) is provided with a pneumatic dust conveying pump (64) fixedly connected to the housing (1) for extracting metal powder. The pneumatic dust conveying pump (64) is provided with a fourth recycling pipe (66). One end of the fourth recycling pipe (66) penetrates the housing (1), and one end of the fourth recycling pipe (66) is connected to the grinding tank (16).

7. A metal powder grinding and sieving device according to claim 6, characterized in that: The first recycling pipe (61) and the second recycling pipe (62) are respectively equipped with discharge valves (67) to control the discharge of the first recycling pipe (61) and the second recycling pipe (62).

8. A metal powder grinding and sieving device according to claim 3, characterized in that: The baffle plate (1352) has a clamping block (1354) fixedly connected to one side, and the filter inner ring (135) has a slot (1353) adapted to the clamping block (1354) below it for clamping the baffle plate (1352).

Images