Alloy powder screening device

Abstract

An alloy powder screening device relates to the field of material screening, including: a tank body, arranged vertically; a powder tank, which is detachably arranged at the upper end of the tank body, and the lower end is located inside the tank body, a screen is arranged inside the powder tank, a baffle is arranged below the screen, which moves in the vertical direction and rotates around its own axis, a rotating ring is arranged at the upper end of the powder tank, which rotates synchronously with the baffle, and a plurality of scrapers located inside the powder tank are arranged inside the rotating ring; a rotating mechanism, including a first gear ring rotatably installed at the upper end of the tank body, a rotating frame installed inside the tank body and rotating around its axis, a plurality of brackets are arranged on the top surface of the first gear ring, a first positioning rod arranged to move in the vertical direction is arranged at the upper end of the bracket, and a plurality of second positioning rods arranged to move in the vertical direction are arranged on the rotating frame, when used, the first positioning rod is inserted in the rotating ring, and the second positioning rod is connected to the baffle. The alloy powder in the powder tank can be directly screened, the impact is reduced, the dust is reduced, and the damage to the workers is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of material screening, and in particular to an alloy powder screening device. Background Art

[0002] In the production process of alloy powder, screening is performed before packaging to classify the alloy powder according to different particle sizes, ensure that the particle size of the product is within the specified range, meet the requirements of the production process and product specifications, and make the particle size distribution of the powder more uniform, avoiding quality problems in subsequent processing. Regardless of whether the alloy powder is prepared by atomization or mechanical crushing, the alloy powder needs to be stored in a powder tank first, and then the powder tank is transferred to the screening process section for screening. In the process of screening the alloy powder, the powder tank carrying the alloy powder is usually moved to the top of the screening device, and then the alloy powder in the powder tank is poured into the screening device. If the alloy powder is screened by vibration screening, the pouring of the alloy powder will have a great impact on the screen, which may cause damage to the screen. Regardless of whether airflow screening or vibration screening is used, a large amount of dust will be generated in the process of pouring the alloy powder, which will cause damage to the health of the staff. Summary of the invention

[0003] In view of the deficiencies of the above-mentioned related prior arts, the present application provides an alloy powder screening device, which can directly screen the alloy powder in the powder tank, reduce impact, reduce dust flying, and reduce the possibility of injury to workers, and has strong practicality.

[0004] In order to achieve the above object, the present invention adopts the following technologies:

[0005] An alloy powder screening device comprises a tank body, a powder tank and a rotating mechanism.

[0006] The tank body is arranged vertically; the powder tank is detachably arranged at the upper end of the tank body, and the lower end is located inside the tank body, an arched screen is arranged inside the powder tank, a baffle is arranged below the screen, which moves in the vertical direction and rotates around its own axis, and when the baffle is at the highest point of its stroke, the top surface of the baffle cooperates with the bottom surface of the screen, and when the baffle is at the lowest point of its stroke, the baffle is lower than the lower end of the powder tank, a rotating ring that rotates synchronously with the baffle is provided at the upper end of the powder tank, and a plurality of scrapers located inside the powder tank are provided on the inner side of the rotating ring along the circumferential direction; the rotating mechanism includes a first gear ring rotatably installed on the upper end of the tank body, a rotating frame installed inside the tank body and rotating around the axis of the tank body, a plurality of brackets arranged at intervals in the circumferential direction are provided on the top surface of the first gear ring, a first positioning rod that moves in the vertical direction is provided on the upper end of the bracket, and a plurality of second positioning rods that move in the vertical direction are provided on the rotating frame. When used, the first positioning rod is passed through the rotating ring, and the second positioning rod is connected to the baffle.

[0007] Furthermore, a connecting rod is provided at the center of the baffle, the connecting rod passes through the screen, and the upper end is penetrated in the center of the rotating ring, a connecting frame is provided at the upper end of the connecting rod, and a plurality of protrusions are provided on the bottom surface of the connecting frame along the circumferential direction, and the protrusions are penetrated in the rotating ring.

[0008] Furthermore, the bottom surface of the baffle is rotatably mounted on the support ring, and a plurality of convex shafts are provided on the circumferential side of the support ring; a plurality of support plates are provided on the bottom surface of the powder tank in the circumferential direction; a slide groove arranged in the vertical direction is provided on the side surface of the support plate; the convex shaft slidably fits in the slide groove; a lifting rod is provided at one end of the convex shaft, the lifting rod is located outside the powder tank, and a support block is provided on one side of the lifting rod. The support block is arc-shaped, and an upward inclined surface is provided at the end opposite to the tangent direction of the rotating ring; a through groove is provided on the side surface of the lifting rod. When in use, the end of the support block with the inclined surface is passed through the through groove, and the support block is installed on the connecting ring. A plurality of support rods are passed through the connecting ring. The upper ends of the support rods are connected to the limiting ring. The limiting ring is rotatably mounted on the side wall of the powder tank, and a retaining ring is provided at the lower end of the support rod for abutting against the bottom surface of the connecting ring.

[0009] Furthermore, a plurality of inverted U-shaped frames are provided on the first gear ring along the circumferential direction, a clamping plate is provided on the top of the U-shaped frame, the clamping plate is arc-shaped and is sleeved with a top plate, push rods are provided at both ends of the top plate, the push rods are passed through the U-shaped frame, a second retaining ring is provided at the lower end of the push rod for abutting against the bottom surface of the upper end of the U-shaped frame, a second spring is sleeved on the push rod, the two ends of the second spring respectively abut against the top surface of the U-shaped frame and the top plate, and are always in a compressed state, a plurality of protrusions are provided on the side surface of the connecting ring along the circumferential direction, the protrusions are provided with an arc-shaped hole passing through from top to bottom, when in use, the clamping plate is passed through the arc-shaped hole, and the top plate abuts against the bottom surface of the protrusion.

[0010] Furthermore, the bracket is in an inverted U-shape, and a base plate is provided at the lower end. The lower end of the first positioning rod passes through the base plate. The first positioning rod is provided with a first retaining ring for abutting against the bottom surface of the upper end of the bracket. The first positioning rod is sleeved with a first spring, and both ends of the first spring respectively abut against the first retaining ring and the base plate, and are always in a compressed state.

[0011] Furthermore, a guide rod is provided at the center of the top surface of the rotating frame, a connecting plate is sleeved on the guide rod, the second positioning rods are installed on the connecting plate, and the lower end of the second positioning rod passes through the rotating frame, and a third spring is sleeved on the guide rod, and both ends of the third spring respectively abut against the connecting plate and the rotating frame, and are always in a compressed state.

[0012] Furthermore, a protruding rod is provided on the bottom surface of the baffle, and a clamping ring is provided at the lower end of the protruding rod. When in use, the second positioning rod is inserted into the clamping ring.

[0013] Furthermore, a second gear ring is provided on the side of the rotating frame, the second gear ring is rotatably mounted on the tank body and meshes with the second gear, the first gear ring is meshed with the first gear, the first gear and the second gear are both sleeved on the transmission shaft, the transmission shaft is rotatably mounted on the outside of the tank body, and one end is connected to the output end of the power equipment, and the power equipment is mounted on the tank body.

[0014] Furthermore, a collecting ring is provided on the rotating frame, and the collecting ring includes two circular rings arranged up and down, wherein the inner diameter of the circular ring located at the bottom is smaller than the inner diameter of the other circular ring, and the two circular rings are connected by a transition section, and an annular groove is provided on the inner wall of the tank body, and the circular ring located at the top is slidably fitted in the annular groove, and the inner diameter of the circular ring located at the top is not less than the inner diameter of the tank body.

[0015] The beneficial effects of the present invention are as follows: by directly placing the powder tank on the tank body and arranging a screen in the powder tank, the alloy powder in the powder tank can be directly screened, thereby avoiding direct impact on the screen in the subsequent screening device, extending the service life of the screen, and reducing the dust generated by directly pouring out the alloy powder in the powder tank, thereby reducing the possibility of causing damage to the workers' bodies, and directly transferring the large particles of alloy remaining in the powder tank after the screening is completed; a baffle that can move up and down and rotate around its own axis is arranged at the bottom of the powder tank, thereby avoiding leakage of the alloy powder in the powder tank, and ensuring that the alloy powder falls smoothly into the tank body during the screening operation; the rotation of the baffle and the scraper, as well as the downward movement of the baffle can be realized through a power source, saving costs and improving energy efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations, and are not intended to limit the scope of the present invention.

[0017] Figure 1 It is a three-dimensional schematic diagram of the overall structure of an embodiment of the present application.

[0018] Figure 2 It is a three-dimensional schematic diagram of the cross-sectional structure of an embodiment of the present application.

[0019] Figure 3 for Figure 2 Enlarged schematic diagram of point C.

[0020] Figure 4 This is a three-dimensional schematic diagram of a powder tank according to an embodiment of the present application.

[0021] Figure 5 This is a schematic diagram of the cross-sectional structure of a powder tank according to an embodiment of the present application.

[0022] Figure 6 for Figure 5 An enlarged schematic diagram of point A.

[0023] Figure 7 It is a three-dimensional schematic diagram of the cooperation between the clamping plate and the connecting ring of an embodiment of the present application.

[0024] Figure 8 for Figure 7 An enlarged schematic diagram of point B.

[0025] Fig. 9 It is a three-dimensional schematic diagram of the rotating mechanism of an embodiment of the present application.

[0026] Fig.10 It is a three-dimensional schematic diagram of the cross-sectional structure of the rotating mechanism of an embodiment of the present application.

[0027] Description of the accompanying drawings: 100 - tank body, 200 - powder tank, 300 - rotating mechanism, 101 - ring groove, 201 - screen, 202 - baffle, 203 - rotating ring, 204 - scraper, 205 - connecting rod, 206 - connecting frame, 207 - convex block, 208 - supporting ring, 209 - convex shaft, 210 - supporting plate, 211 - slide groove, 212 - lifting rod, 213 - supporting block, 214 - connecting ring, 215 - supporting rod, 216 - limiting ring, 217 - retaining ring, 218 - through groove, 219 - protrusion, 220 - arc hole, 221 - convex Rod, 222—clamping ring, 301—first gear ring, 302—rotating frame, 303—bracket, 304—first positioning rod, 305—second positioning rod, 306—bottom plate, 307—first retaining ring, 308—first spring, 309—U-shaped frame, 310—clamping plate, 311—top plate, 312—top rod, 313—second retaining ring, 314—second spring, 315—guide rod, 316—connecting plate, 317—third spring, 318—second gear ring, 319—second gear, 320—first gear, 321—transmission shaft, 322—collection ring. DETAILED DESCRIPTION

[0028] To make the objectives, technical solutions and advantages of the embodiments of the present invention more clear, the implementation modes of the present invention are described in detail below with reference to the accompanying drawings. However, the embodiments described in the present invention are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] like Figure 1 to Figure 10 As shown, an embodiment of the present application provides an alloy powder screening device, including: a tank body 100, a powder tank 200, and a rotating mechanism 300.

[0030] The tank body 100 is arranged vertically, and the lower end of the tank body 100 is connected to the feed port of a secondary screening device; the powder tank 200 is detachably arranged at the upper end of the tank body 100, and the lower end is located inside the tank body 100, and an arched screen 201 is arranged inside the powder tank 200, and a baffle 202 is arranged below the screen 201 to move in the vertical direction and rotate around its own axis, and a rotating ring 203 is arranged at the upper end of the powder tank 200 to rotate synchronously with the baffle 202, and a plurality of rotating rings 203 are arranged inside the rotating ring 203 along the circumferential direction. The scraper 204 inside the material tank 200 sieves the alloy powder in the powder material tank 200 through the movement of the scraper 204, so that the alloy powder with smaller particle size passes through the screen 201, and when the baffle 202 is at the highest point of its stroke, the top surface of the baffle 202 cooperates with the bottom surface of the screen 201, thereby sealing the lower end of the powder material tank 200 to prevent leakage when the powder material tank 200 is placed alone or during transfer. When the baffle 202 is at the lowest point of its stroke, the baffle 202 is lower than the powder material tank 200. The rotating mechanism 300 includes a first gear ring 301 rotatably mounted on the upper end of the tank body 100, a rotating frame 302 mounted inside the tank body 100 and rotating around the axis of the tank body 100, and the rotating frame 302 rotates synchronously with the first gear ring 301. The top surface of the first gear ring 301 is provided with a plurality of brackets 303 arranged at intervals in the circumferential direction, and the upper end of the bracket 303 is provided with a first positioning bracket 303 movable in the vertical direction. Rod 304, a plurality of second positioning rods 305 movable in the vertical direction are arranged on the rotating frame 302. When the powder tank 200 is placed on the tank body 100, the first positioning rod 304 is inserted into the rotating ring 203, and the second positioning rod 305 is connected to the baffle 202, so that the scraper 204 is driven to make a circular motion through the rotation of the first gear ring 301, and the baffle 202 is synchronously rotated around its own axis, so that the alloy powder falling on the baffle 202 obtains centrifugal force, so that it falls more smoothly under the tank body 100.

[0031] Specifically, Figure 4-Figure 5 As shown, a connecting rod 205 is provided at the center of the baffle 202, the connecting rod 205 passes through the screen 201, and the upper end is penetrated in the center of the rotating ring 203, a connecting frame 206 is provided at the upper end of the connecting rod 205, and a plurality of protrusions 207 are provided on the bottom surface of the connecting frame 206 along the circumferential direction, and the protrusions 207 are penetrated in the rotating ring 203. When the alloy powder in the powder tank 200 is screened, the rotating ring 203 rotates around its own axis, and the scraper 204 starts to turn the alloy powder in the powder tank 200, so as to screen the alloy powder, and at the same time drives the connecting rod 205 to rotate, so that the alloy powder falling on the baffle 202 is subjected to the centrifugal force, so that the alloy powder falls from the gap between the baffle 202 and the lower end of the powder tank 200.

[0032] Specifically, Figure 5-Figure 6 As shown, the bottom surface of the baffle 202 is rotatably mounted on the support ring 208, and a plurality of cams 209 are provided on the circumferential side of the support ring 208. A plurality of support plates 210 are provided on the bottom surface of the powder tank 200 in the circumferential direction. A slide groove 211 is provided on the side of the support plate 210 in the vertical direction. The cam 209 is slidably fitted in the slide groove 211. When the baffle 202 needs to be lower than the lower end of the powder tank 200, the cam 209 is moved downward along the slide groove 211, and the support ring 208 will drive the baffle 202 to move downward synchronously.

[0033] More specifically, Figure 4-Figure 6 As shown, in order to facilitate the automatic downward movement of the baffle 202, a lifting rod 212 is provided at one end of the convex shaft 209, and the lifting rod 212 is located outside the powder tank 200, and a support block 213 is provided on one side of the lifting rod 212. The support block 213 is arc-shaped, and an end thereof opposite to the tangent direction of the rotating ring 203 is provided with an upward inclined surface, and a through groove 218 is provided on the side of the lifting rod 212. When the baffle 202 is at the highest point, the end of the support block 213 with the inclined surface is penetrated into the through groove 218, so that the top surface of the baffle 202 is matched with the bottom surface of the screen 201 to close the lower end of the powder tank 200, and the support block 213 is installed on the connecting ring 214, and a plurality of support rods 21 are penetrated in the connecting ring 214. 5. The upper end of the support rod 215 is connected to the limit ring 216, and the limit ring 216 is rotatably installed on the side wall of the powder tank 200. The lower end of the support rod 215 is provided with a retaining ring 217 for abutting against the bottom surface of the connecting ring 214. In the actual operation process, an external force is applied to the connecting ring 214 to force the connecting ring 214 to rotate, so that the support block 213 moves out of the through groove 218. During the movement of the support block 213, the inclined surface of the support block 213 will contact the upper part of one end of the through groove 218, and the lifting rod 212 will gradually move downward under the action of its own gravity, thereby driving the baffle 202 to move downward synchronously. After the support block 213 is completely moved out of the through groove 218, the baffle 202 is lower than the lower end of the powder tank 200.

[0034] Specifically, Figure 5-Figure 8As shown, a plurality of inverted U-shaped frames 309 are provided on the first gear ring 301 along the circumferential direction, a clamping plate 310 is provided on the top of the U-shaped frame 309, the clamping plate 310 is arc-shaped, and is sleeved with a top plate 311, and a top rod 312 is provided at both ends of the top plate 311, and the top rod 312 is penetrated in the U-shaped frame 309, and a second retaining ring 313 is provided at the lower end of the top rod 312 for abutting against the bottom surface of the upper end of the U-shaped frame 309, and a second spring 314 is sleeved on the top rod 312, and the second spring The two ends of the connecting ring 214 are respectively abutted against the top surface of the U-shaped frame 309 and the top plate 311, and are always in a compressed state. The side of the connecting ring 214 is provided with a plurality of protrusions 219 along the circumferential direction. The protrusions 219 are provided with arc holes 220 passing through from top to bottom. When the powder tank 200 is placed on the tank body 100, the clamping plate 310 is passed through the arc holes 220, and the top plate 311 abuts against the bottom surface of the protrusions 219. At this time, the second spring 314 is further compressed to The first gear ring 301 rotates, driving the U-shaped frame 309 to move synchronously, and the clamping plate 310 will move along the trajectory of the arc hole 220. After the clamping plate 310 abuts against one end of the arc hole 220, as the first gear ring 301 continues to rotate, it will drive the connecting ring 214 to move synchronously. At this time, it will drive the supporting block 213 to gradually move out of the through groove 218, thereby realizing the lowering of the baffle 202. In the process of the supporting block 213 moving out of the through groove 218, under the action of the second spring 314, the top plate 311 has a tendency to move upward. Driven by the top plate 311, the connecting ring 214 will be forced to move upward as well, until the second retaining ring 313 at the lower end of the top rod 312 abuts against the U-shaped frame 309. At this time, the lower end of the supporting block 213 is higher than the top end of the lifting rod 212, thereby avoiding interference between the supporting block 213 and the lifting rod 212 during the continuous rotation of the first gear ring 301.

[0035] Specifically, Figure 1 , Figure 7-Figure 8 As shown, the bracket 303 is in an inverted U shape, and a bottom plate 306 is provided at the lower end. The lower end of the first positioning rod 304 passes through the bottom plate 306. The first positioning rod 304 is provided with a first retaining ring 307 for abutting against the bottom surface of the upper end of the bracket 303. The first positioning rod 304 is sleeved with a first spring 308. The two ends of the first spring 308 respectively abut against the first retaining ring 307 and the bottom plate 306, and are always in a compressed state. When the powder tank 200 is placed on the tank body 100, the bottom surface of the rotating ring 203 It will contact the top of the first positioning rod 304 and force the first positioning rod 304 to move downward, and the first spring 308 will be further compressed. As the first gear ring 301 rotates, the first positioning rod 304 will be aligned with the hole set on the rotating ring 203. At this time, the first positioning rod 304 will be inserted into the rotating ring 203 under the action of the first spring 308. As the first gear ring 301 rotates, the rotating ring 203 will be driven to rotate synchronously, and the screening operation of the alloy powder can begin.

[0036] Specifically, Figure 2-Figure 3 As shown, a convex rod 221 is provided on the bottom surface of the baffle 202, and a clamping ring 222 is provided at the lower end of the convex rod 221. When the baffle 202 is lower than the lower end of the powder tank 200, the second positioning rod 305 is inserted into the clamping ring 222, so that when the second positioning rod 305 rotates around the central axis of the tank body 100, it will drive the baffle 202 to rotate synchronously.

[0037] Specifically, Figure 2-Figure 3 As shown, a guide rod 315 is provided at the center of the top surface of the rotating frame 302, and a connecting plate 316 is sleeved on the guide rod 315. The second positioning rod 305 is installed on the connecting plate 316, and the lower end of the second positioning rod 305 passes through the rotating frame 302. A third spring 317 is sleeved on the guide rod 315, and the two ends of the third spring 317 are respectively abutted against the connecting plate 316 and the rotating frame 302, and are always in a compressed state. After the powder tank 200 is placed on the tank body 100, the first gear ring 301 and the rotating frame 302 start to rotate synchronously. At this time, the rotating ring 203 has not started to rotate, and during the rotation of the first gear ring 301 and the rotating frame 302, the baffle plate 317 is pressed against the rotating ring 303. 202 will move downward as described above, the bottom surface of the retaining ring 222 will contact the top of the second positioning rod 305, and force the second positioning rod 305 to move downward, and the third spring 317 will be further compressed. When the rotating frame 302 rotates a certain angle, the second positioning rod 305 will penetrate into the retaining ring 222 under the action of the third spring 317. At the same time, the first positioning rod 304 will penetrate into the rotating ring 203, and then the baffle 202 and the rotating ring 203 can start to rotate synchronously, which not only ensures the smooth progress of the screening operation, but also avoids interference. All components can be driven to operate through one driving source, which greatly saves energy efficiency.

[0038] Specifically, Figure 9-10 As shown, in order to ensure the synchronous rotation of the rotating frame 302 and the first gear ring 301, a second gear ring 318 is provided on the side of the rotating frame 302. The second gear ring 318 is rotatably installed on the tank body 100 and meshes with the second gear 319. The first gear ring 301 meshes with the first gear 320. The first gear 320 and the second gear 319 are both sleeved on the transmission shaft 321. The transmission shaft 321 is rotatably installed on the outside of the tank body 100, and one end is connected to the output end of the power equipment. The power equipment is installed on the tank body 100. The transmission shaft 321 is rotated by the drive of the power equipment, which can drive the first gear ring 301 and the second gear ring 318 to start rotating synchronously, thereby synchronously applying a steering force to the baffle 202 and the rotating ring 203, so that the two start rotating synchronously, and at the same time, a steering force is applied to the upper and lower sides of the baffle 202, which can also make the rotation of the baffle 202 and the rotating ring 203 more stable.

[0039] Specifically, Figure 9-10 As shown, a collecting ring 322 is provided on the rotating frame 302, and the collecting ring 322 includes two circular rings arranged up and down, wherein the inner diameter of the circular ring located at the bottom is smaller than the inner diameter of the other circular ring, and the two circular rings are connected by a transition section, and an annular groove 101 is provided on the inner wall of the tank body 100, and the circular ring located at the top is slidably fitted in the annular groove 101, which can exert a limiting effect on the rotation of the collecting ring 322, and the inner diameter of the circular ring located at the top is not less than the inner diameter of the tank body 100, thereby avoiding the accumulation of alloy powder on the upper end of the collecting ring 322, and also allowing the alloy powder to be gathered together through the collecting ring 322 after screening, thereby avoiding excessive dispersion on the side of the tank body 100 and affecting the subsequent screening effect.

[0040] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. An alloy powder screening device, characterized in that: include: The tank body (100) is arranged vertically; A powder tank (200) is detachably arranged at the upper end of the tank body (100), and the lower end is located inside the tank body (100); an arched screen (201) is provided inside the powder tank (200); a baffle (202) is provided below the screen (201) and moves in a vertical direction and rotates around its own axis; when the baffle (202) is located at the highest point of its stroke, the top surface of the baffle (202) cooperates with the bottom surface of the screen (201); when the baffle (202) is located at the lowest point of its stroke, the baffle (202) is lower than the lower end of the powder tank (200); a rotating ring (203) is provided at the upper end of the powder tank (200) and rotates synchronously with the baffle (202); a plurality of scrapers (204) located inside the powder tank (200) are provided along the circumferential direction on the inner side of the rotating ring (203); The rotating mechanism (300) comprises a first gear ring (301) rotatably mounted on the upper end of the tank body (100), and a rotating frame (302) mounted inside the tank body (100) and rotating around the axis of the tank body (100); a plurality of brackets (303) arranged at intervals along a circumferential direction are provided on the top surface of the first gear ring (301); a first positioning rod (304) movably mounted in a vertical direction is provided on the upper end of the bracket (303); a plurality of second positioning rods (305) movably mounted in a vertical direction are provided on the rotating frame (302); when in use, the first positioning rod (304) is inserted into the rotating ring (203), and the second positioning rod (305) is connected to the baffle (202); The bottom surface of the baffle (202) is rotatably mounted on a support ring (208); a plurality of convex shafts (209) are provided on the circumferential side of the support ring (208); a plurality of support plates (210) are provided on the bottom surface of the powder tank (200) along the circumferential direction; a slide groove (211) arranged along the vertical direction is provided on the side surface of the support plate (210); the convex shaft (209) is slidably fitted in the slide groove (211); a lifting rod (212) is provided at one end of the convex shaft (209); the lifting rod (212) is located outside the powder tank (200); and a support block (213) is provided on one side of the lifting rod (212); the support block (213) is arc-shaped. An upward inclined surface is provided at one end opposite to the tangent direction of the rotating ring (203); a through groove (218) is provided on the side of the lifting rod (212); when in use, the end of the supporting block (213) provided with the inclined surface is passed through the through groove (218); the supporting block (213) is mounted on a connecting ring (214); a plurality of supporting rods (215) are passed through the connecting ring (214); the upper ends of the supporting rods (215) are connected to a limiting ring (216); the limiting ring (216) is rotatably mounted on the side wall of the powder tank (200); and a retaining ring (217) is provided at the lower end of the supporting rod (215) for abutting against the bottom surface of the connecting ring (214); A plurality of inverted U-shaped frames (309) are provided on the first gear ring (301) along the circumferential direction. A clamping plate (310) is provided on the top of the U-shaped frame (309). The clamping plate (310) is arc-shaped and sleeved with a top plate (311). Both ends of the top plate (311) are provided with push rods (312). The push rods (312) are inserted into the U-shaped frame (309). A second retaining ring (313) is provided at the lower end of the push rod (312) for abutting against the bottom surface of the upper end of the U-shaped frame (309). The push rod (312) ) is sleeved with a second spring (314), the two ends of which respectively abut against the top surface of the U-shaped frame (309) and the top plate (311), and are always in a compressed state. The side surface of the connecting ring (214) is provided with a plurality of protrusions (219) along the circumferential direction, and the protrusions (219) are provided with arc-shaped holes (220) passing through from top to bottom. When in use, the clamping plate (310) is inserted into the arc-shaped hole (220), and the top plate (311) abuts against the bottom surface of the protrusion (219).

2. The alloy powder screening device according to claim 1, characterized in that: A connecting rod (205) is provided at the center of the baffle (202), the connecting rod (205) passes through the screen (201), and the upper end is penetrated through the center of the rotating ring (203), a connecting frame (206) is provided at the upper end of the connecting rod (205), a plurality of protrusions (207) are provided on the bottom surface of the connecting frame (206) along the circumferential direction, and the protrusions (207) are penetrated through the rotating ring (203).

3. The alloy powder screening device according to claim 1, characterized in that: The bracket (303) is in an inverted U-shape, and a bottom plate (306) is provided at the lower end. The lower end of the first positioning rod (304) passes through the bottom plate (306). The first positioning rod (304) is provided with a first retaining ring (307) for abutting against the bottom surface of the upper end of the bracket (303). The first positioning rod (304) is sleeved with a first spring (308). The two ends of the first spring (308) respectively abut against the first retaining ring (307) and the bottom plate (306), and are always in a compressed state.

4. The alloy powder screening device according to claim 1, characterized in that: A guide rod (315) is provided at the center of the top surface of the rotating frame (302), a connecting plate (316) is sleeved on the guide rod (315), the second positioning rods (305) are installed on the connecting plate (316), and the lower end of the second positioning rod (305) passes through the rotating frame (302), and a third spring (317) is sleeved on the guide rod (315), and two ends of the third spring (317) are respectively abutted against the connecting plate (316) and the rotating frame (302), and are always in a compressed state.

5. The alloy powder screening device according to claim 1, characterized in that: The bottom surface of the baffle (202) is provided with a protruding rod (221), and the lower end of the protruding rod (221) is provided with a clamping ring (222). When in use, the second positioning rod (305) is inserted into the clamping ring (222).

6. The alloy powder screening device according to claim 1, characterized in that: A second gear ring (318) is provided on the side of the rotating frame (302); the second gear ring (318) is rotatably mounted on the tank body (100) and meshes with a second gear (319); the first gear ring (301) meshes with a first gear (320); the first gear (320) and the second gear (319) are both sleeved on a transmission shaft (321); the transmission shaft (321) is rotatably mounted on the outside of the tank body (100) and one end of the transmission shaft is connected to an output end of a power device; the power device is mounted on the tank body (100).

7. The alloy powder screening device according to claim 1, characterized in that: The rotating frame (302) is provided with a collecting ring (322), and the collecting ring (322) comprises two circular rings arranged up and down, wherein the inner diameter of the circular ring located at the bottom is smaller than the inner diameter of the other circular ring, and the two circular rings are connected by a transition section, and the inner wall of the tank body (100) is provided with a ring groove (101), and the circular ring located at the top is slidably fitted in the ring groove (101), and the inner diameter of the circular ring located at the top is not smaller than the inner diameter of the tank body (100).

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