Powder recycling and screening device for powder room

Abstract

The utility model relates to a screened powder recycling device, in particular to a powder recycling and screening device for a powder room, which comprises a screening frame, a sealing mechanism is arranged above the screening frame, a turnover mechanism is arranged at the bottom of the sealing mechanism, and the turnover mechanism is also positioned above the screening frame. The sealing mechanism comprises a feeding bin and a sealing plate, the feeding bin is fixedly arranged on the screening frame, a through groove is formed in a shell of the feeding bin, the sealing plate is slidably connected with the feeding bin, and the sealing plate is used for opening and closing an opening of the feeding bin. Through cooperation of the sealing mechanism and the overturning mechanism, when dust particles accumulated on the sieve plate need to be poured out, the feeding bin is sealed through the sealing plate firstly, dust is prevented from falling off in the overturning process of the sieve plate, then in the resetting process, the sieve plate is made to return to the initial position firstly, then the bottom of the feeding bin is opened, and the dust particles are poured out. Dust is prevented from falling out of the sieve plate, and the problem that disassembly is needed when dust is poured in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to a powder screening and recycling device, in particular to a powder recovery and screening device for a powder room. Background Art

[0002] When the large cyclone powder exchange room is spraying powder, about 60% of the powder is directly applied to the surface of the workpiece, and the remaining 40% of the powder will fall into the powder spraying room. This part of the fallen powder is called recycled powder. In the powder spraying production line, a large amount of recycled powder is generated;

[0003] After being recycled, the recycled powder needs to be screened before it can be reused. Existing recycling powder screening machines generally screen through sieve plates. Different sieve plates are required for screening dust with different particle diameters. During the screening process, sieve plates with different apertures need to be replaced many times. In addition, during the replacement of the sieve plates, large particles of dust accumulated on the sieve plates need to be poured out to prevent clogging of the sieve plates.

[0004] However, in the process of dumping, the material is often disassembled first and then dumped. This method of discharging is more troublesome and has certain limitations. Utility Model Content

[0005] The purpose of the utility model is to provide a powder recovery and screening device for a powder room to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A powder recovery and screening device for a powder room comprises a screening frame, a sealing mechanism is provided above the screening frame, a turning mechanism is provided at the bottom of the sealing mechanism, and the turning mechanism is also located above the screening frame;

[0008] The sealing mechanism includes a feeding bin and a sealing plate. The feeding bin is fixedly arranged on the screening frame. A through slot is provided inside the shell of the feeding bin. The sealing plate is slidably connected to the feeding bin and is used to open and close the opening of the feeding bin.

[0009] The turning mechanism includes a feed bin and a sieve plate, the feed bin is movably arranged on the screening frame, the feed bin is located at the bottom of the feed bin, a through slot is opened inside the shell of the feed bin, and the sieve plate is slidably connected to the feed bin;

[0010] When the sealing plate closes the bottom opening of the feed bin, the feed bin and the sieve plate begin to move away from the cylinder and turn over, and the dust particles accumulated on the sieve plate are poured out. When the feed bin and the sieve plate move back toward the cylinder and return to their original positions, the sealing plate begins to open the bottom opening of the feed bin;

[0011] A vibrating mechanism is also provided on one side of the turning mechanism. The vibrating mechanism includes a motor and a cam. The cam cooperates with the sieve plate to push the sieve plate to move back and forth inside the feed bin.

[0012] The powder recovery, screening and reuse device for a powder room as described above: a cylinder is fixedly arranged on the screening frame, and the sealing mechanism also includes a first connecting rod, which is rotatably arranged at the bottom of the output end of the cylinder, and the end of the first connecting rod facing away from the cylinder is rotatably connected to the sealing plate.

[0013] The powder recovery, screening and reuse device for a powder room as described above: a discharge pipe is fixedly connected to the bottom of the feed bin, and the bottom of the discharge pipe is located directly above the feed bin.

[0014] The powder recovery, screening and reuse device for a powder room as described above: the flipping mechanism also includes a second connecting rod, a third connecting rod, a slider, a baffle, a hollow block, a first sleeve rod and a first spring, the second connecting rod is rotatably set at the bottom of the output end of the cylinder, the third connecting rod is rotatably set at the bottom of the second connecting rod, the slider is rotatably set at the end of the third connecting rod away from the second connecting rod, the baffle is fixedly set on the screening rack, the hollow block abuts on one side of the baffle, the slider is slidably set inside the hollow block, the first sleeve rod is fixedly set on the side of the slider, the first spring is sleeved on the surface of the first sleeve rod, one side of the first spring abuts against the inner wall of the hollow block, and the other side of the first spring abuts against the slider, a circular through groove for the first sleeve rod to move is opened on the baffle, the first sleeve rod is slidably connected to the baffle, and the end of the hollow block away from the baffle is fixedly connected to the bottom of the feed bin.

[0015] The powder recovery, screening and reuse device for a powder room as described above: the vibration mechanism also includes a horizontal plate, a second sleeve rod and a second spring, the horizontal plate is fixedly arranged on the screen plate, the second sleeve rod is fixedly arranged on the side of the horizontal plate facing the feed bin, the second spring is sleeved on the second sleeve rod, one end of the second spring abuts against the horizontal plate, and the other end of the second spring abuts against the outer surface of the feed bin.

[0016] The powder recovery, screening and reuse device for a powder room as described above: the vibration mechanism also includes a sleeve, a transmission rod and a third spring, the sleeve is fixedly arranged at the bottom end of the output shaft of the motor, the transmission rod is arranged inside the sleeve, the transmission rod and the sleeve are slidably matched, an annular groove is provided on the inner wall of the sleeve, and a third spring is provided inside the annular groove, the bottom of the third spring abuts against the sleeve, the top of the third spring abuts against the convex ring provided on the transmission rod, and the bottom of the transmission rod is fixedly connected to the surface of the cam.

[0017] The powder recovery, screening and reuse device for a powder room as described above: the flipping mechanism also includes a gear and a tooth plate, the gear is rotatably arranged on the side of the feed bin through a bearing and a connecting shaft, the tooth plate is fixedly arranged on the screening frame, and the gear cooperates with the tooth plate.

[0018] The powder recovery, screening and reuse device for a powder room as described above: a slide rail is fixedly provided on the screening frame, a slide rod is slidably connected to the inside of the slide rail, a connecting plate is fixedly connected to the top of the slide rod, the connecting plate is provided on the surface of the slide rail, and the connecting plate is slidably matched with the slide rail, the connecting plate is provided between the gear and the feed bin, and the connecting plate is matched with both the feed bin and the gear.

[0019] Compared with the prior art, the beneficial effect of the present invention is as follows: the present invention cooperates with the sealing mechanism and the flipping mechanism. When it is necessary to pour out the dust particles accumulated on the sieve plate, the feeding bin is first closed by the sealing plate to prevent the dust from falling during the flipping of the sieve plate. Then, during the resetting process, the sieve plate is first returned to its initial position, and then the bottom of the feeding bin is opened to prevent the dust from falling outside the sieve plate, solving the problem of the need to disassemble for pouring proposed in the background technology. The utility model is also provided with a vibrating mechanism, so that the cam and the sieve plate can operate stably and cooperate, so that the sieve plate can operate stably inside the feed bin to better screen out the dust particles accumulated on the sieve plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of the powder recovery, screening and reuse device for the powder room.

[0021] Figure 2 This is a schematic diagram of the structure of another position of the powder recovery, screening and reuse device for the powder room.

[0022] Figure 3 This is a schematic diagram of the slider and nearby structures in the powder recovery and screening device for the powder room.

[0023] Figure 4 This is a schematic diagram of the structure of the feed bin and sieve plate in the powder recovery and screening device for powder room.

[0024] Figure 5 This is a schematic diagram of the limit plate structure on the sieve plate in the powder recovery and screening device for powder room.

[0025] Figure 6 This is a schematic diagram of the connection structure between the sleeve and the transmission rod in the powder recovery and screening device for the powder room.

[0026] Figure 7 This is a schematic diagram of the structure of the gears and tooth plates in the powder recovery and screening device for the powder room.

[0027] Figure 8 This is a schematic diagram of the structure after the transmission rod is removed and separated from the sleeve in the powder recovery and screening device for the powder room.

[0028] In the figure: 1. screening frame; 2. cylinder; 3. first connecting rod; 4. feeding bin; 5. discharge pipe; 6. feeding bin; 7. sieve plate; 8. second connecting rod; 9. third connecting rod; 10. slider; 11. baffle; 12. hollow block; 13. first set of rods; 14. first spring; 15. cross plate; 16. second set of rods; 17. second spring; 18. motor; 19. sleeve; 20. transmission rod; 21. cam; 22. third spring; 23. slide rail; 24. slide rod; 25. connecting plate; 26. gear; 27. tooth plate; 28. sealing plate. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] See also Figures 1-8 As an embodiment of the present invention, the powder recovery and screening device for powder room includes a screening frame 1, a sealing mechanism is provided above the screening frame 1, a flip mechanism is provided at the bottom of the sealing mechanism, and the flip mechanism is also located above the screening frame 1;

[0031] The sealing mechanism includes a feeding bin 4 and a sealing plate 28. The feeding bin 4 is fixedly mounted on the screening frame 1. A through slot is provided inside the shell of the feeding bin 4. The sealing plate 28 is slidably connected to the feeding bin 4. The sealing plate 28 is used to open and close the opening of the feeding bin 4.

[0032] The turning mechanism includes a feed bin 6 and a sieve plate 7. The feed bin 6 is movably arranged on the screening frame 1. The feed bin 6 is located at the bottom of the feed bin 4. A through slot is provided inside the shell of the feed bin 6. The sieve plate 7 is slidably connected to the feed bin 6.

[0033] When the sealing plate 28 closes the bottom opening of the feed bin 4, the feed bin 6 and the sieve plate 7 begin to move away from the cylinder 2 and turn over, and pour out the dust particles accumulated on the sieve plate 7. When the feed bin 6 and the sieve plate 7 move back toward the cylinder 2 and return to their original positions, the sealing plate 28 begins to open the bottom opening of the feed bin 4.

[0034] A vibrating mechanism is further provided on one side of the turning mechanism. The vibrating mechanism includes a motor 18 and a cam 21 . The cam 21 cooperates with the sieve plate 7 to push the sieve plate 7 to move back and forth inside the feed bin 6 .

[0035] An inclined plate is also fixedly mounted on the inner wall of the feeding bin 4 to prevent the poured dust from falling from the opening at the bottom.

[0036] In this embodiment, a sealing mechanism and a turning mechanism are provided above the screening rack 1. When the dust recovered inside the powder room needs to be screened and reused again, the dust is first poured into the feed bin 6 through the feed bin 4, and the dust entering the sieve plate 7 is screened by the vibrating mechanism. When the screening is completed, some dust larger than the screening pores will accumulate on the sieve plate 7. At this time, the dust accumulated on the sieve plate 7 needs to be poured out, and then the sieve plate 7 is replaced for re-screening. In the process of sealing and turning, the sealing mechanism first seals the bottom of the feed bin 4 through the sealing plate 28, and then the turning mechanism starts to drive the feed bin 6 and the sieve plate 7 to operate until they are turned over and poured out;

[0037] When it is necessary to return, the feed bin 6 and the sieve plate 7 will first return to their initial positions, and at the same time, the portion of the sealing plate 28 that extends beyond the feed bin 4 will be pulled back. After the feed bin 6 and the sieve plate 7 return to their initial positions, the sealing plate 28 begins to be slowly withdrawn from the bottom of the feed bin 4 to completely open the bottom of the feed bin 4 for further screening.

[0038] During vibration, the motor 18 drives the cam 21 to rotate, and the cam 21 cooperates with the sieve plate 7 to drive the sieve plate 7 to move back and forth inside the feed bin 6, thereby screening the dust.

[0039] As a further solution of the present invention, a cylinder 2 is fixedly installed on the screening frame 1, and the sealing mechanism also includes a first connecting rod 3, which is rotatably set at the bottom of the output end of the cylinder 2, and the end of the first connecting rod 3 facing away from the cylinder 2 is rotatably connected to the sealing plate 28.

[0040] In this embodiment, when the sealing mechanism wants to close the bottom of the feeding bin 4, the cylinder 2 is started, and the output end of the cylinder 2 will pull the first connecting rod 3 upward, and the first connecting rod 3 will push the sealing plate 28 toward the feeding bin 4 and into the bottom of the feeding bin 4 until it is closed.

[0041] As a further solution of the present invention, a discharge pipe 5 is fixedly connected to the bottom of the feeding bin 4 , and the bottom of the discharge pipe 5 is located directly above the feeding bin 6 .

[0042] In this embodiment, the collected dust is poured into the feed bin 4 , and the dust particles enter the feed bin 6 through the discharge pipe 5 .

[0043] As a further solution of the present invention, the flip mechanism also includes a second connecting rod 8, a third connecting rod 9, a slider 10, a baffle 11, a hollow block 12, a first set of rods 13 and a first spring 14. The second connecting rod 8 is rotatably arranged at the bottom of the output end of the cylinder 2, the third connecting rod 9 is rotatably arranged at the bottom of the second connecting rod 8, the slider 10 is rotatably arranged at one end of the third connecting rod 9 away from the second connecting rod 8, the baffle 11 is fixedly arranged on the screening frame 1, the hollow block 12 abuts on one side of the baffle 11, and the slider The block 10 is slidably arranged inside the hollow block 12, the first sleeve rod 13 is fixedly arranged on the side of the slider 10, the first spring 14 is sleeved on the surface of the first sleeve rod 13, one side of the first spring 14 is in contact with the inner wall of the hollow block 12, and the other side of the first spring 14 is in contact with the slider 10, and a circular through groove for the first sleeve rod 13 to move is provided on the baffle 11, the first sleeve rod 13 is slidably connected to the baffle 11, and the end of the hollow block 12 facing away from the baffle 11 is fixedly connected to the bottom of the feed bin 6.

[0044] In this embodiment, after the sealing plate 28 closes the bottom of the feed bin 4, the second connecting rod 8 pushes the slider 10 through the third connecting rod 9 to fit the inner wall of the hollow block 12, and then the sealing plate 28 continues to slide inside the feed bin 4 (the length of the sealing plate 28 is greater than the length of the bottom opening of the feed bin 4). At the same time, the hollow block 12 will push the feed bin 6 to slide a distance first, avoiding the bottom of the discharge pipe 5, and then the feed bin 6 and the sieve plate 7 begin to flip over to dump the accumulated dust. When returning, the feed bin 6 and the sieve plate 7 will first return to their initial positions. At this time, the protruding part of the sealing plate 28 has been retracted. When the output end of the cylinder 2 continues to run downward, the sealing plate 28 will be pulled out from the inside of the feed bin 4 and its bottom will be opened. At this time, the slider 10 begins to squeeze the first spring 14 toward the cylinder 2 inside the hollow block 12. At the same time, the hollow block 12 has been in contact with the baffle 11, that is, the second connecting rod 8 and the third connecting rod 9 are still running. When the hollow block 12 has stopped running with the feed bin 6 and the sieve plate 7, the dust poured into the feed bin 4 begins to enter the inside of the feed bin 6 again.

[0045] As a further solution of the present invention, the vibration mechanism also includes a transverse plate 15, a second sleeve rod 16 and a second spring 17. The transverse plate 15 is fixedly arranged on the screen plate 7, and the second sleeve rod 16 is fixedly arranged on the side of the transverse plate 15 facing the feed bin 6. The second spring 17 is sleeved on the second sleeve rod 16, and one end of the second spring 17 abuts against the transverse plate 15, and the other end of the second spring 17 abuts against the outer surface of the feed bin 6.

[0046] The sieve plate 7 is also provided with a limit plate at the other end of the feed bin 6 .

[0047] In this embodiment, when the sieve plate 7 moves back and forth inside the feed bin 6, the cross plate 15 will squeeze the second spring 17, and the second spring 17 cooperates with the cam 21, so that the sieve plate 7 can move back and forth inside the feed bin 6. At the same time, a limit plate is provided at the other end of the sieve plate 7 to prevent the sieve plate 7 from slipping from the inside of the feed bin 6.

[0048] As a further solution of the present invention, the vibration mechanism also includes a sleeve 19, a transmission rod 20 and a third spring 22. The sleeve 19 is fixedly arranged at the bottom end of the output shaft of the motor 18, and the transmission rod 20 is arranged inside the sleeve 19. The transmission rod 20 slides with the sleeve 19. An annular groove is provided on the inner wall of the sleeve 19, and a third spring 22 is provided inside the annular groove. The bottom of the third spring 22 abuts against the sleeve 19, and the top of the third spring 22 abuts against the convex ring provided on the transmission rod 20. The bottom of the transmission rod 20 is fixedly connected to the surface of the cam 21.

[0049] A groove is formed on the inner wall of the sleeve 19 , and a protrusion is fixedly provided on the transmission rod 20 .

[0050] In this embodiment, the output shaft of the motor 18 drives the sleeve 19 to rotate, and the groove on the sleeve 19 cooperates with the protrusion on the transmission rod 20 to drive the transmission rod 20 to rotate, and the transmission rod 20 drives the cam 21 to rotate. The cam 21 uses the asymmetry of its own structure to push the screen plate 7. Combined with the previous embodiment, the screen plate 7 can move back and forth for screening;

[0051] The third spring 22 is provided between the sleeve 19 and the transmission rod 20 so that when the edge of the sieve plate 7 returns to its initial position, if the long end of the cam 21 rotates to this side of the sieve plate 7, the sieve plate 7 will squeeze the cam 21 downward (when the sieve plate 7 returns to the horizontal plane of its initial position, it will definitely squeeze the cam 21 downward). When the cam 21 moves downward, the top of the transmission rod 20 will squeeze the third spring 22 on the inner wall of the sleeve 19, so that the cam 21 can move downward. When the cam 21 continues to rotate, that is, when the long end of the cam 21 is separated from the sieve plate 7, the cam 21 is pulled back to the same horizontal plane as the sieve plate 7 under the resetting action of the third spring 22, so that the cam 21 continues to drive the sieve plate 7 to move back and forth.

[0052] As a further solution of the present invention, the flipping mechanism also includes a gear 26 and a tooth plate 27. The gear 26 is rotatably arranged on the side of the feed bin 6 through a bearing and a connecting shaft, and the tooth plate 27 is fixedly arranged on the screening frame 1, and the gear 26 cooperates with the tooth plate 27.

[0053] In this embodiment, when the screen plate 7 needs to be turned over, it is turned over by means of rolling engagement of the gear 26 on the tooth plate 27 .

[0054] As a further solution of the present invention, a slide rail 23 is fixedly provided on the screening rack 1, and a slide rod 24 is slidably connected inside the slide rail 23. A connecting plate 25 is fixedly connected to the top of the slide rod 24. The connecting plate 25 is provided on the surface of the slide rail 23, and the connecting plate 25 is slidably matched with the slide rail 23. The connecting plate 25 is provided between the gear 26 and the feed bin 6, and the connecting plate 25 is matched with both the feed bin 6 and the gear 26.

[0055] In this embodiment, combined with the previous embodiment, when the feed bin 6 needs to be flipped, it first slides on the surface of the slide rail 23 through the connecting plate 25 and the slide rod 24. After sliding for a distance, the gear 26 begins to contact the tooth plate 27. At this time, the gear 26 will drive the feed bin 6 to start flipping to pour out the dust particles accumulated on the sieve plate 7. When the feed bin 6 and the sieve plate 7 need to return to the initial position, they can run in the opposite direction, that is, the output end of the cylinder 2 needs to run downward.

[0056] The above embodiments are exemplary rather than restrictive, so any technical solution that can be implemented in other specific forms without departing from the spirit or basic features of the present invention is included in the present invention.

Claims

1. A powder recovery and screening device for a powder room, characterized in that: The powder recovery and screening device for a powder room comprises a screening frame (1), a sealing mechanism is provided above the screening frame (1), a turning mechanism is provided at the bottom of the sealing mechanism, and the turning mechanism is also located above the screening frame (1); The sealing mechanism comprises a feeding bin (4) and a sealing plate (28); the feeding bin (4) is fixedly arranged on the screening frame (1); a through slot is provided inside the shell of the feeding bin (4); the sealing plate (28) is slidably connected to the feeding bin (4); and the sealing plate (28) is used to open and close the opening of the feeding bin (4); The turning mechanism comprises a feed bin (6) and a sieve plate (7), wherein the feed bin (6) is movably arranged on the screening frame (1), the feed bin (6) is located at the bottom of the feed bin (4), a through slot is provided inside the shell of the feed bin (6), and the sieve plate (7) is slidably connected to the feed bin (6); When the sealing plate (28) seals the bottom opening of the feed bin (4), the feed bin (6) and the sieve plate (7) begin to move in a direction away from the cylinder (2) and turn over, and dump out the dust particles accumulated on the sieve plate (7). When the feed bin (6) and the sieve plate (7) move back in the direction of the cylinder (2) and return to their original positions, the sealing plate (28) begins to open the bottom opening of the feed bin (4); A vibrating mechanism is also provided on one side of the turning mechanism. The vibrating mechanism comprises a motor (18) and a cam (21). The cam (21) cooperates with the sieve plate (7) to push the sieve plate (7) to move back and forth inside the feed bin (6).

2. A powder recovery and screening device for a powder room according to claim 1, characterized in that: A cylinder (2) is fixedly mounted on the screening frame (1), and the sealing mechanism further comprises a first connecting rod (3), wherein the first connecting rod (3) is rotatably mounted on the bottom of the output end of the cylinder (2), and an end of the first connecting rod (3) facing away from the cylinder (2) is rotatably connected to the sealing plate (28).

3. The powder recovery, screening and reuse device for a powder room according to claim 1, characterized in that: A discharge pipe (5) is fixedly connected to the bottom of the feeding bin (4), and the bottom of the discharge pipe (5) is located directly above the feeding bin (6).

4. The powder recovery, screening and reuse device for a powder room according to claim 1, characterized in that: The flip mechanism further comprises a second connecting rod (8), a third connecting rod (9), a slider (10), a baffle (11), a hollow block (12), a first set of rods (13) and a first spring (14); the second connecting rod (8) is rotatably arranged at the bottom of the output end of the cylinder (2); the third connecting rod (9) is rotatably arranged at the bottom of the second connecting rod (8); the slider (10) is rotatably arranged at one end of the third connecting rod (9) away from the second connecting rod (8); the baffle (11) is fixedly arranged on the screening frame (1); the hollow block (12) abuts against one side of the baffle (11); the slider (10) slides The first sleeve (13) is movably arranged inside the hollow block (12), the first sleeve rod (13) is fixedly arranged on the side of the slider (10), the first spring (14) is sleeved on the surface of the first sleeve rod (13), one side of the first spring (14) is in contact with the inner wall of the hollow block (12), and the other side of the first spring (14) is in contact with the slider (10), the baffle (11) is provided with a circular through groove for the first sleeve rod (13) to move, the first sleeve rod (13) is slidably connected to the baffle (11), and the end of the hollow block (12) away from the baffle (11) is fixedly connected to the bottom of the feed bin (6).

5. The powder recovery, screening and reuse device for a powder room according to claim 1, characterized in that: The vibrating mechanism further comprises a transverse plate (15), a second sleeve rod (16) and a second spring (17), wherein the transverse plate (15) is fixedly arranged on the screen plate (7), the second sleeve rod (16) is fixedly arranged on a side of the transverse plate (15) facing the feed bin (6), the second spring (17) is sleeved on the second sleeve rod (16), one end of the second spring (17) abuts against the transverse plate (15), and the other end of the second spring (17) abuts against the outer surface of the feed bin (6).

6. The powder recovery, screening and reuse device for a powder room according to claim 1, characterized in that: The vibrating mechanism further comprises a sleeve (19), a transmission rod (20) and a third spring (22), wherein the sleeve (19) is fixedly arranged at the bottom end of the output shaft of the motor (18), the transmission rod (20) is arranged inside the sleeve (19), the transmission rod (20) and the sleeve (19) are slidably matched, an annular groove is provided on the inner wall of the sleeve (19), and a third spring (22) is provided inside the annular groove, the bottom of the third spring (22) abuts against the sleeve (19), the top of the third spring (22) abuts against a convex ring provided on the transmission rod (20), and the bottom of the transmission rod (20) is fixedly connected to the surface of the cam (21).

7. The powder recovery, screening and reuse device for a powder room according to claim 1, characterized in that: The turning mechanism further comprises a gear (26) and a tooth plate (27); the gear (26) is rotatably arranged on the side of the feed bin (6) via a bearing and a connecting shaft; the tooth plate (27) is fixedly arranged on the screening frame (1); the gear (26) cooperates with the tooth plate (27).

8. The powder recovery, screening and reuse device for a powder room according to claim 7, characterized in that: A slide rail (23) is fixedly provided on the screening rack (1), a slide rod (24) is slidably connected to the interior of the slide rail (23), a connecting plate (25) is fixedly connected to the top of the slide rod (24), the connecting plate (25) is provided on the surface of the slide rail (23), and the connecting plate (25) and the slide rail (23) are slidably matched, the connecting plate (25) is provided between the gear (26) and the feed bin (6), and the connecting plate (25) is matched with both the feed bin (6) and the gear (26).

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