Metal powder screening device for powder metallurgy

Abstract

The utility model discloses a metal powder screening device for powder metallurgy, which comprises a machine frame, a screening bin is arranged on the machine frame, a plurality of screening holes are arranged at the bottom end of the screening bin, a screening device is arranged on the machine frame, and an inserting device is arranged on one side of the screening bin. The inserting device comprises an inserting sleeve, an unlocking sleeve, an inserting rod, a reducing groove, a reducing block, a reset spring, a fixing rod and a fixing groove, the unlocking sleeve is installed on the outer side of the inserting sleeve, the reducing groove is formed in the inner side of the unlocking sleeve, the reducing block is connected to one end of the fixing rod, the reset spring is connected with the inner wall of the reducing block and the inserting sleeve, and the fixing groove is formed in the inner side of the inserting rod. A reinforcing mechanism is arranged on the outer side of the inserting sleeve and comprises a movable sleeve, locking grooves, locking blocks, a movable spring, a movable rod and an annular groove, the movable sleeve is movably installed on the outer side of the inserting sleeve through threads, the multiple locking grooves are formed in the annular groove, and the locking blocks are clamped into the locking grooves; the screening device solves the problems that a traditional screening device is poor in screening effect, inconvenient to replace and insufficient in stability.

Description

Technical Field

[0001] This utility model relates to the field of metal powder sieving technology for powder metallurgy, and more specifically, it relates to a metal powder sieving device for powder metallurgy. Background Technology

[0002] In the field of powder metallurgy, metal powder screening devices are key equipment for raw material processing. Their screening efficiency, ease of operation, and structural stability directly affect production efficiency and product quality. However, screening devices currently on the market still have many technical defects in practical applications. These problems not only affect production efficiency but may also reduce product quality.

[0003] The primary problem is the poor screening effect. Existing screening devices have significant defects: First, they rely solely on simple vibration for screening, which limits the vibration amplitude; second, the vibration process can easily lead to loosening and deformation of the equipment structure; in addition, long-term vibration not only accelerates equipment wear but may also cause fatigue failure of connecting parts. This design deficiency not only affects the screening quality and equipment lifespan but may also lead to insufficient screening, resulting in powder waste and unstable quality, increasing production costs and maintenance expenses.

[0004] More notably, replacement is inconvenient. Although some improved screening devices achieve shaking screening through reciprocating movement, there are still obvious problems: First, the connection structure between the screening chamber and the movable plate is complex, making disassembly and assembly difficult. The replacement process requires the use of various specialized tools, and the disassembly and assembly steps are numerous and time-consuming. In addition, the complex disassembly and assembly process not only increases the labor intensity of workers but also prolongs the downtime of the equipment. This design deficiency not only reduces the adaptability and working efficiency of the equipment but may also affect the normal progress of the production plan and increase production costs.

[0005] Most critically, there is a lack of stability. Although some further improved screening devices have achieved the function of quick replacement of screening chambers, there are obvious defects: First, the structural strength of the quick disassembly and assembly mechanism is insufficient and the load-bearing capacity is limited; second, stress concentration is prone to occur at the connection points during equipment shaking; third, the fixed structure may loosen or fall off due to movement. The unstable structure not only affects the screening accuracy, but may also cause equipment damage and safety accidents. This design deficiency not only reduces the reliability and safety of the equipment, but may also lead to production interruption and equipment scrapping. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] In view of the problems existing in the prior art, the present invention provides a metal powder screening device for powder metallurgy to solve the technical problems mentioned in the background art.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model provides the following technical solution: a metal powder sieving device for powder metallurgy, comprising a frame, a detachable sieving chamber on the frame, a plurality of sieving holes at the bottom of the sieving chamber, a sieving device mounted on the frame, and a plug-in device on one side of the sieving chamber, the plug-in device comprising a plug-in sleeve, an unlocking sleeve, a plug-in rod, a variable diameter groove, a variable diameter block, a return spring, a fixing rod, and a fixing groove, the plug-in sleeve being detachably fitted onto the outside of the plug-in rod, the unlocking sleeve being rotatably mounted on the outside of the plug-in sleeve, the variable diameter groove being formed inside the unlocking sleeve, and the variable diameter block being fixedly connected... The return spring is connected to one end of the fixed rod, and its two ends are respectively connected to the inner wall of the variable diameter block and the outer wall of the plug sleeve. The other end of the fixed rod is inserted into the fixed groove, which is located inside the plug rod. A reinforcing mechanism is provided on the outer side of the plug sleeve. The reinforcing mechanism includes a movable sleeve, a locking groove, a locking block, a movable spring, a movable rod, and an annular groove. The movable sleeve is movably installed on the outer side of the plug sleeve by a thread. Multiple locking grooves are located in the annular groove. The locking block is inserted into the locking groove. The movable spring is movably sleeved on the outer side of the movable rod. The movable rod is fixedly connected to one side of the locking block. The annular groove is located on the side of the unlocking sleeve.

[0010] The present invention is further configured such that the screening device includes a connecting plate, a movable plate, a transmission shaft, a rotating plate, movable wheels, and a slide rail. The connecting plate is fixedly installed on one side of the screening chamber. One end of the movable plate is rotatably connected to the connecting plate, and the other end of the movable plate is rotatably connected to the rotating plate. The transmission shaft is rotatably installed on the frame. The rotating plate is detachably installed on one end of the transmission shaft. The slide rail is fixedly installed at the bottom of the screening chamber. A plurality of movable wheels are detachably installed on the top of the frame, and the movable wheels are movably positioned within the slide rail.

[0011] The present invention is further provided that a detachable cover is provided above the screening chamber, and a handle is connected to the top of the cover.

[0012] The present invention is further configured such that a feeding plate is detachably provided on the inner side of the frame, and the feeding plate is installed at an angle on the inner side of the frame.

[0013] The present invention is further configured such that a motor is detachably mounted on the inner side of the frame, a drive wheel is connected to the output end of the motor, a driven wheel is detachably mounted on the transmission shaft, and a synchronous belt is fitted on the outer side of the driven wheel and the drive wheel. Both the drive wheel and the driven wheel are designed as synchronous pulleys.

[0014] The present invention is further configured such that a guide groove is provided on the outer side of the plug rod, and multiple guide rails are fixedly provided on the inner wall of the plug sleeve. The guide groove is adapted to the guide rails, and the cooperation between the guide groove and the guide rails ensures accurate installation.

[0015] The present invention is further configured such that a fixing plate is fixedly provided on the outer side of the plug sleeve, and the moving rod slides through the fixing plate, the fixing plate ensuring that the moving rod moves smoothly.

[0016] The present invention is further configured such that the edge of the inner wall of the lock groove and the end of the lock block are both designed with rounded corners.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, the present invention provides a metal powder sieving device for powder metallurgy, which has the following beneficial effects:

[0019] 1. The screening device constructs a high-efficiency screening system through the rational configuration of connecting plates, movable plates, drive shafts, rotating plates, movable wheels, and slide rails. The connection between the connecting plates and the screening chamber provides the transmission basis, the rotational cooperation between the movable plates and the rotating plates realizes motion conversion, and the power connection between the drive shaft and the motor ensures stable drive. This design not only achieves reciprocating motion by driving the synchronous belt through the motor-driven drive wheel, but also provides smooth guidance through the rolling cooperation between the movable wheels and the slide rails. Furthermore, the inclined design of the discharge plate achieves smooth material separation, effectively solving the problem of poor screening effect in traditional equipment, improving screening efficiency, ensuring processing stability, and reducing equipment wear.

[0020] 2. The plug-in device, through the precise cooperation of the plug-in sleeve, unlocking sleeve, plug-in rod, reducing groove, reducing block, return spring, fixing rod, and fixing groove, forms a quick disassembly and assembly system. The cooperation between the plug-in sleeve and the plug-in rod provides an installation channel, the rotation design of the unlocking sleeve and the reducing groove achieves locking control, and the plug-in structure of the fixing rod and the fixing groove ensures a secure fit. This structure, through the sliding cooperation of the guide rail and the guide groove, achieves precise installation of the screening chamber, effectively solving the problem of inconvenient replacement in traditional equipment, realizing quick disassembly and assembly of the screening chamber, and improving maintenance efficiency.

[0021] 3. The reinforcement mechanism constructs a reliable locking system through the coordinated work of the moving sleeve, locking groove, locking block, moving spring, moving rod, and annular groove. The threaded connection between the moving sleeve and the plug sleeve provides locking and unlocking functions, the locking block and locking groove's engaging design achieves fixed position, and the sliding structure between the moving rod and the fixed plate ensures smooth movement. This structure achieves locking control through the threaded connection of the moving sleeve and provides automatic reset through the elastic action of the moving spring, effectively solving the problem of insufficient stability in traditional equipment, preventing structural loosening during movement, and ensuring the stability of the screening process. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a metal powder sieving device for powder metallurgy according to the present invention.

[0023] Figure 2 This is a schematic diagram of the structure of this utility model with the frame removed;

[0024] Figure 3 This is a structural schematic diagram of the insertion device and the reinforcing mechanism in this utility model;

[0025] Figure 4 This is a cross-sectional structural diagram of the insertion device and the reinforcing mechanism in this utility model;

[0026] Figure 5 This is a schematic diagram of the unlocking sleeve and the moving rod in this utility model.

[0027] In the diagram: 1. Frame; 2. Screening bin; 3. Screening hole; 4. Insert sleeve; 5. Unlocking sleeve; 6. Insert rod; 7. Variable diameter groove; 8. Variable diameter block; 9. Return spring; 10. Fixed rod; 11. Fixed groove; 12. Moving sleeve; 13. Locking groove; 14. Locking block; 15. Moving spring; 16. Moving rod; 17. Annular groove; 18. Connecting plate; 19. Movable plate; 20. Drive shaft; 21. Rotating plate; 22. Movable wheel; 23. Slide rail; 24. Bin cover; 25. Handle; 26. Discharge plate; 27. Motor; 28. Drive wheel; 29. ​​Driven wheel; 30. Synchronous belt; 31. Guide groove; 32. Guide rail; 33. Fixed plate. Detailed Implementation

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0030] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0031] Please see Figures 1-5A metal powder sieving device for powder metallurgy includes a frame 1, a detachable sieving chamber 2 on the frame 1, a plurality of sieving holes 3 at the bottom of the sieving chamber 2, a sieving device mounted on the frame 1, and a plug-in device on one side of the sieving chamber 2. The plug-in device includes a plug-in sleeve 4, an unlocking sleeve 5, a plug-in rod 6, a variable diameter groove 7, a variable diameter block 8, a return spring 9, a fixing rod 10, and a fixing groove 11. The plug-in sleeve 4 is detachably fitted on the outside of the plug-in rod 6, the unlocking sleeve 5 is rotatably mounted on the outside of the plug-in sleeve 4, the variable diameter groove 7 is opened on the inside of the unlocking sleeve 5, the variable diameter block 8 is fixedly connected to one end of the fixing rod 10, and the two ends of the return spring 9 are respectively connected to the variable diameter groove 7. The inner wall of the diameter block 8 is connected to the outer wall of the plug sleeve 4. The other end of the fixing rod 10 is inserted into the fixing groove 11. The fixing groove 11 is opened on the inner side of the plug rod 6. A reinforcing mechanism is provided on the outer side of the plug sleeve 4. The reinforcing mechanism includes a movable sleeve 12, a locking groove 13, a locking block 14, a movable spring 15, a movable rod 16, and an annular groove 17. The movable sleeve 12 is installed on the outer side of the plug sleeve 4 by a thread. Multiple locking grooves 13 are opened in the annular groove 17. The locking block 14 is inserted into the locking groove 13. The movable spring 15 is movably sleeved on the outer side of the movable rod 16. The movable rod 16 is fixedly connected to one side of the locking block 14. The annular groove 17 is opened on one side of the unlocking sleeve 5.

[0032] The screening device includes a connecting plate 18, a movable plate 19, a drive shaft 20, a rotating plate 21, movable wheels 22, and a slide rail 23. The connecting plate 18 is fixedly installed on one side of the screening chamber 2. One end of the movable plate 19 is rotatably connected to the connecting plate 18, and the other end of the movable plate 19 is rotatably connected to the rotating plate 21. The drive shaft 20 is rotatably installed on the frame 1. The rotating plate 21 is detachably installed on one end of the drive shaft 20. The slide rail 23 is fixedly installed at the bottom of the screening chamber 2. Multiple movable wheels 22 are detachably installed on the top of the frame 1, and the movable wheels 22 move within the slide rail 23.

[0033] The screening chamber 2 is detachably covered with a cover 24, and a handle 25 is connected to the top of the cover 24.

[0034] The inner side of the frame 1 is detachably provided with a feeding plate 26, which is installed at an angle on the inner side of the frame 1.

[0035] A motor 27 is detachably mounted on the inner side of the frame 1. A drive wheel 28 is connected to the output end of the motor 27. A driven wheel 29 is detachably mounted on the transmission shaft 20. A synchronous belt 30 is fitted on the outer side of the driven wheel 29 and the drive wheel 28. Both the drive wheel 28 and the driven wheel 29 are designed as synchronous pulleys.

[0036] In this embodiment, when the device is needed, firstly, the cover 24 is lifted upwards using the handle 25 to remove it from above the screening chamber 2. Then, the metal powder to be screened is placed into the screening chamber 2. The cover 24 is then replaced on the screening chamber 2. Next, the motor 27 is turned on, causing the drive wheel 28 connected to the output end to rotate. The drive wheel 28 then drives the driven wheel 29 to rotate via the synchronous belt 30, causing the driven wheel 29 to drive the transmission shaft 20 to rotate. The transmission shaft 20 then drives the rotating plate 21 to rotate, and the rotating plate 21 moves the connecting plate 18 via the movable plate 19. The connecting plate 18 drives the screening chamber 2 and the slide rail 23 to slide left and right above the movable wheel 22. At the same time, the movable wheel 22 will roll due to friction. Then the metal powder will follow the screening chamber 2 to move left and right. Then the metal powder smaller than the diameter of the screening hole 3 will pass through the screening hole 3 and fall into the feed plate 26 set below. Then it will slide down the feed plate 26 into the external collection device. Then the metal powder larger than the diameter of the screening hole 3 will be intercepted and retained inside the screening chamber 2. After screening, the chamber cover 24 is removed, and then the screening chamber 2 is removed to clean the large diameter metal powder retained inside.

[0037] Please see Figures 3-5 As a further implementation of the overall equipment: a guide groove 31 is provided on the outer side of the plug rod 6, and multiple guide rails 32 are fixedly provided on the inner wall of the plug sleeve 4, with the guide groove 31 and the guide rails 32 being adapted to each other.

[0038] A fixing plate 33 is fixed on the outside of the plug sleeve 4, and the moving rod 16 slides through the fixing plate 33.

[0039] The inner edge of the lock groove 13 and the end of the lock block 14 are both designed with rounded corners.

[0040] More specifically, when the screening chamber 2 needs to be replaced or its internal parts cleaned, the screening chamber 2 must first be removed. First, rotate the moving sleeve 12 forward. The moving sleeve 12 moves along the threaded part on the outside of the insertion sleeve 4. Then, the moving sleeve 12 no longer limits one end of the moving rod 16. Then, rotate the unlocking sleeve 5 forward. The unlocking sleeve 5 drives the annular groove 17 and the locking groove 13 on one side to move. Then, the inner wall of the locking groove 13 presses against the end of the locking block 14. Then, the end of the locking block 14 slides out of the locking groove 13 and into the annular groove 17. At the same time, the locking block 14 will drive the locking rod to slide along the fixed plate 33, and the locking block 14 will be fixed. Plate 33 presses against the moving spring 15, while the unlocking sleeve 5 rotates the inner diameter-changing groove 7. Then, the return spring 9 resets and pushes the diameter-changing block 8 to move outward, ensuring that the outer wall of the diameter-changing block 8 is always in contact with the inner wall of the diameter-changing groove 7. Then, the diameter-changing block 8 drives the fixing rod 10 to be pulled out of the fixing groove 11. Then, the insertion sleeve 4 and the insertion rod 6 are pulled to both sides, causing the insertion sleeve 4 to slide along the guide rail 32 along the guide groove 31. Then, the insertion sleeve 4 and the insertion rod 6 are completely removed. Then, the screening chamber 2 is removed from the frame 1, and the new screening chamber 2 is placed on the frame 1, so that the movable wheel 22 is in the slide rail 23. On the inside, the axis of the connecting plate 18 is concentric with the axis of one end of the movable plate 19. Then, the plug rod 6 passes through the connecting plate 18 and the movable plate 19 from one side. Then, the plug sleeve 4 is fitted onto the outside of the plug rod 6 from the other side, and the guide rail 32 slides into the guide groove 31. After the plug sleeve 4 is fully fitted onto the outside of the plug rod 6, the unlocking sleeve 5 is rotated in the opposite direction, so that the unlocking sleeve 5 drives the annular groove 17 and the locking groove 13 on one side to rotate and reset, and the unlocking sleeve 5 drives the variable diameter groove 7 on the inside to rotate and reset. Then, the inner wall of the variable diameter groove 7 presses against the outer wall of the variable diameter block 8, so that the variable diameter block 8 presses against the reset spring 9 on the inside. This causes the variable diameter block 8 to drive the fixed rod 10 to re-insert into the fixed groove 11. At this time, the locking block 14 moves to the position corresponding to the original locking groove 13. Then, the moving spring 15 resets and pushes the locking block 14 to insert into the original locking groove 13. The locking block 14 will drive the moving rod 16 to slide and reset along the fixed plate 33. Then, the moving sleeve 12 rotates in the opposite direction, so that the moving sleeve 12 re-limits one end of the moving rod 16, so that the moving rod 16 and the locking block 14 cannot move. Then, the locking block 14 and the locking groove 13 cooperate to lock the unlocking sleeve 5, ensuring the stability of the installation structure, thereby ensuring the stable operation of the screening work.

[0041] In summary, when using or operating the entire equipment: First, lift the bin cover 24 upwards using handle 25 to remove it from above the screening bin 2. Then, place the metal powder to be screened into the screening bin 2. Next, replace the bin cover 24 back onto the screening bin 2. Then, turn on the motor 27. The motor 27 drives the drive wheel 28 connected to the output end to rotate. The drive wheel 28 then drives the driven wheel 29 to rotate via the synchronous belt 30, causing the driven wheel 29 to drive the transmission shaft 20 to rotate. This causes the transmission shaft 20 to drive the rotating plate 21 to rotate, and the rotating plate 21 then drives the connecting plate 1 via the movable plate 19. 8. The connecting plate 18 moves, causing the screening chamber 2 and the slide rail 23 to slide left and right above the movable wheel 22. At the same time, the movable wheel 22 will roll due to friction. Then the metal powder will follow the screening chamber 2 to move left and right. Then the metal powder smaller than the diameter of the screening hole 3 will pass through the screening hole 3 and fall into the feed plate 26 set below. Then it will slide down the feed plate 26 into the external collection device. Then the metal powder larger than the diameter of the screening hole 3 will be intercepted and retained inside the screening chamber 2. After screening, the chamber cover 24 is removed, and then the screening chamber 2 is removed to clean the large diameter metal powder retained inside.

[0042] When the screening chamber 2 needs to be replaced or its interior cleaned, it must first be removed. First, rotate the moving sleeve 12 clockwise. The moving sleeve 12 moves along the thread on the outside of the insertion sleeve 4. Then, the moving sleeve 12 no longer limits one end of the moving rod 16. Then, rotate the unlocking sleeve 5 clockwise. The unlocking sleeve 5 drives the annular groove 17 and the locking groove 13 on one side to move. Then, the inner wall of the locking groove 13 presses against the end of the locking block 14. Then, the end of the locking block 14 slides out of the locking groove 13 and into the annular groove 17. At the same time, the locking block 14 will drive the locking rod to slide along the fixed plate 33, and the locking block 14 will cooperate with the fixed plate 33. When the moving spring 15 is pressed, the unlocking sleeve 5 will cause the inner diameter-changing groove 7 to rotate. Then, the return spring 9 will reset and push the diameter-changing block 8 to move outward, so that the outer wall of the diameter-changing block 8 is always in contact with the inner wall of the diameter-changing groove 7. Then, the diameter-changing block 8 will drive the fixing rod 10 to be pulled out of the fixing groove 11. Then, the insertion sleeve 4 and the insertion rod 6 will be pulled to both sides respectively, so that the insertion sleeve 4 will drive the guide rail 32 to slide out along the guide groove 31. Then, the insertion sleeve 4 and the insertion rod 6 will be completely removed. Then, the screening chamber 2 will be removed from the frame 1. Then, the new screening chamber 2 will be placed on the frame 1, so that the movable wheel 22 is inside the slide rail 23. The connecting plate 18 is aligned with the axis of one end of the movable plate 19. The insertion rod 6 passes through the connecting plate 18 and the movable plate 19 from one side. The insertion sleeve 4 is then fitted onto the outside of the insertion rod 6 from the other side, allowing the guide rail 32 to slide into the guide groove 31. Once the insertion sleeve 4 is fully fitted onto the outside of the insertion rod 6, the unlocking sleeve 5 is rotated in the opposite direction. This causes the unlocking sleeve 5 to rotate and reset the annular groove 17 and locking groove 13 on one side, and also causes the unlocking sleeve 5 to rotate and reset the variable diameter groove 7 on the inner side. The inner wall of the variable diameter groove 7 then presses against the outer wall of the variable diameter block 8, causing the variable diameter block 8 to press against the inner reset spring 9. The variable diameter block 8 causes the fixed rod 10 to re-insert into the fixed groove 11. At this time, the locking block 14 moves to the position corresponding to the original locking groove 13. Then, the moving spring 15 resets and pushes the locking block 14 into the original locking groove 13. The locking block 14 will drive the moving rod 16 to slide and reset along the fixed plate 33. Then, the moving sleeve 12 is rotated in the opposite direction, so that the moving sleeve 12 re-limits one end of the moving rod 16, so that the moving rod 16 and the locking block 14 cannot move. Then, the locking block 14 and the locking groove 13 cooperate to lock the unlocking sleeve 5, ensuring the stability of the installation structure, thereby ensuring the stable operation of the screening work.

[0043] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A metal powder screening device for powder metallurgy, comprising a frame (1) provided with a screening bin (2) having a plurality of screening holes (3) at the bottom end, characterized in that: A screening device is installed on the frame (1). A plug-in device is provided on one side of the screening chamber (2). The plug-in device includes a plug-in sleeve (4), an unlocking sleeve (5), a plug-in rod (6), a diameter-changing groove (7), a diameter-changing block (8), a return spring (9), a fixing rod (10), and a fixing groove (11). The unlocking sleeve (5) is installed on the outside of the plug-in sleeve (4). The diameter-changing groove (7) is opened on the inside of the unlocking sleeve (5). The diameter-changing block (8) is connected to one end of the fixing rod (10). The return spring (9) is connected to the inner wall of the diameter-changing block (8) and the plug-in sleeve (4). The fixing groove (11) is opened on the plug-in rod (6). Inside, a reinforcing mechanism is provided on the outside of the plug sleeve (4). The reinforcing mechanism includes a movable sleeve (12), a locking groove (13), a locking block (14), a movable spring (15), a movable rod (16), and an annular groove (17). The movable sleeve (12) is installed on the outside of the plug sleeve (4) by a thread. Multiple locking grooves (13) are opened in the annular groove (17). The locking block (14) is inserted into the locking groove (13). The movable spring (15) is sleeved on the outside of the movable rod (16). The movable rod (16) is connected to one side of the locking block (14). The annular groove (17) is opened on one side of the unlocking sleeve (5).

2. A metal powder screening device for powder metallurgy according to claim 1, characterized in that: The screening device includes a connecting plate (18), a movable plate (19), a drive shaft (20), a rotating plate (21), movable wheels (22), and a slide rail (23). The connecting plate (18) is fixedly installed on one side of the screening chamber (2). One end of the movable plate (19) is rotatably connected to the connecting plate (18), and the other end of the movable plate (19) is rotatably connected to the rotating plate (21). The drive shaft (20) is rotatably installed on the frame (1). The rotating plate (21) is detachably installed on one end of the drive shaft (20). The slide rail (23) is fixedly installed at the bottom of the screening chamber (2). Multiple movable wheels (22) are detachably installed above the frame (1), and the movable wheels (22) move within the slide rail (23).

3. A metal powder screening device for powder metallurgy according to claim 2, characterized in that: The screening chamber (2) is detachably provided with a chamber cover (24), and a handle (25) is connected to the top of the chamber cover (24).

4. The metal powder screening apparatus for powder metallurgy according to claim 3, characterized by: The inner side of the frame (1) is provided with a detachable feeding plate (26), which is installed at an angle on the inner side of the frame (1).

5. A metal powder sieving device for powder metallurgy according to claim 4, characterized in that: The frame (1) is detachably equipped with a motor (27) on its inner side. The output end of the motor (27) is connected to a drive wheel (28). A driven wheel (29) is detachably equipped on the transmission shaft (20). A synchronous belt (30) is fitted on the outer side of the driven wheel (29) and the drive wheel (28). Both the drive wheel (28) and the driven wheel (29) are designed as synchronous pulleys.

6. A metal powder sieving apparatus for powder metallurgy according to any one of claims 1 to 5, characterized in that: The plug rod (6) has a guide groove (31) on its outer side, and the plug sleeve (4) has multiple guide rails (32) fixedly installed on its inner wall. The guide groove (31) is adapted to the guide rails (32).

7. The metal powder screening apparatus for powder metallurgy according to claim 1, characterized by: A fixing plate (33) is fixedly provided on the outside of the plug sleeve (4), and the moving rod (16) slides through the fixing plate (33).

8. A metal powder screening device for powder metallurgy according to claim 7, characterized in that: The inner edge of the lock groove (13) and the end of the lock block (14) are both designed with rounded corners.

Images