Stainless steel circular powder screening machine

Abstract

The invention relates to the technical field of powder screening, in particular to a stainless steel circular powder screening machine which comprises a vibrating screen body and a screen mesh. A bottom discharging opening of the feeding pipe corresponds to the outer edge of the screen, the bottom of the feeding pipe is connected with a partition plate, and the bottom face of the partition plate is connected with a vortex-shaped material pushing plate; the middle part of the feeding pipe is connected in series with a rotating pipe; the inner wall of the rotating pipe is fixedly connected with a spiral crushing blade; a rotation control assembly used for driving the feeding pipe, the partition plate and the material pushing plate to rotate synchronously and driving the rotating pipe to rotate relative to the feeding pipe is arranged on the vibrating screen body, and the rotating direction of the feeding pipe is consistent with the vortex direction of the material pushing plate; a discharging hole is formed in the middle of the screen and communicated with a coarse powder pipe, and a fine powder collecting plate is arranged in the vibrating screen body. According to the powder screening device, the powder accumulation condition can be improved, the retention time of powder on the screen can be prolonged, the screening quality can be improved, caked materials can be crushed, and waste can be reduced.

Description

Technical Field

[0001] The invention relates to the technical field of powder screening, in particular to a stainless steel circular powder screening machine. Background Art

[0002] In the processing and production of magnesium powder, since different application fields have different requirements on the particle size of magnesium powder, the magnesium powder needs to be screened to obtain magnesium powder with uniform particle size.

[0003] Referring to the Chinese patent document with the authorization announcement number CN217491641U and the announcement date September 27, 2022, and the name of the rotary vibrating screen with a conical powder gathering funnel, the invention comprises a vibrating screen body, in which an upper screen and a lower screen are arranged, and a conical powder gathering funnel is arranged between the upper screen and the lower screen. After the metal powder is screened by the upper screen, it falls into the conical powder gathering funnel and gathers to the center of the lower screen.

[0004] The vibrating screen body is provided with three powder outlets connected to standard powder tanks. The powder outlets are respectively arranged at the edge of the upper screen, the edge of the lower screen and the bottom edge of the vibrating screen body to guide out the edge metal powder. The powder diffuses spirally on the upper and lower screens. During the diffusion process, part of the powder falls below the screen through the sieve holes of the screen. The powder diffused to the edge of the screen moves in a circle along the edge of the screen and is discharged through the powder outlet.

[0005] With regard to the above-mentioned related technologies, the existing screening devices mostly adopt a continuous feeding method. When powder is added to the screen, powder accumulation will occur. As the screening continues, the thickness of the powder on the screen is difficult to control, affecting the screening effect of the screen. There is a situation where the fine powder in the powder has not been filtered but moves to the edge of the screen with other coarse powder, affecting the screening quality, and the magnesium powder is easy to clump. Summary of the invention

[0006] In view of this, the present invention provides a stainless steel circular powder screening machine, aiming to solve the technical problem in the prior art that due to the accumulation of powder on the screen and the agglomeration of powder, the fine powder moves and is discharged with the coarse powder before being filtered, thus affecting the screening effect.

[0007] In order to solve the above technical problems, the present invention provides a stainless steel round powder screening machine, which adopts the following technical solution: a stainless steel round powder screening machine, comprising a vibrating screen body and a screen mesh horizontally arranged and connected to the inner circumferential side wall of the vibrating screen body; A feed pipe is arranged on the vibrating screen body and the bottom discharge port corresponds to the outer edge of the screen. A horizontally placed partition is fixedly connected to the outer wall of the bottom of the feed pipe. The partition is rotatably connected to the circumferential side wall inside the vibrating screen body. A vortex-shaped push plate is connected to the bottom surface of the partition. The bottom surface of the push plate is connected to the top surface of the screen. A rotating tube is connected in series in the middle of the feed tube, and a spiral crushing blade is fixedly connected to the inner wall of the rotating tube; The vibrating screen body is provided with a rotation control assembly for driving the feed pipe, the partition plate and the push plate to rotate synchronously and driving the rotating pipe to rotate relative to the feed pipe, and the rotation direction of the feed pipe is consistent with the vortex direction of the push plate; A feeding hole is provided in the middle of the screen and is connected with a coarse powder pipe extending downward to the outside of the vibrating screen body. A fine powder collecting plate located below the screen is provided in the vibrating screen body.

[0008] By adopting the above technical scheme, the feed pipe, the partition and the push plate rotate synchronously, and the powder falls onto the screen through the feed pipe. As the feed pipe rotates, the powder is sprinkled along the circumference of the screen and falls on the outer edge of the screen, thereby improving the accumulation of powder on the screen. Compared with the previous situation in which the powder directly falls into the middle of the screen, the degree of damage to the screen caused by the metal powder in this scheme is more uniform, which can extend the service life of the device.

[0009] The vortex-shaped push plate cooperates with the screen and the partition to form a vortex-shaped powder flow channel. The push plate pushes the powder on the screen, so that the powder moves along the vortex-shaped flow channel from the edge of the screen toward the middle of the screen. The common rotation of the screen is changed to the rotation of the push plate. The push plate pushes the powder to move, which is conducive to pushing the powder on the screen, expanding the contact area between the powder and the screen, and reducing the accumulation of powder. At the same time, it can change the movement path of the powder, thereby extending the residence time of the powder on the screen, thereby achieving the purpose of improving the screening effect. Ensure that the rotation direction of the feed pipe is consistent with the vortex direction of the push plate, so that the powder can be smoothly pushed by the push plate and move toward the middle of the screen.

[0010] The partition can prevent the powder on the screen from escaping to the outside of the vibrating screen during movement, and can provide a stable connection relationship for the push plate, which is beneficial to improve the stability of the device. The spiral crushing blade can break up the agglomerated powder and reduce waste.

[0011] Optionally, the rotation control assembly includes a rotating motor, which is connected to the bottom of the vibrating screen body, and an output end of the rotating motor passes upward through the coarse powder pipe and is connected to the outer side wall of the feed pipe.

[0012] Optionally, the rotation control component also includes a support column, the bottom of the support column is connected to the coarse powder pipe through a plurality of circumferentially arranged vertical rods, the top of the support column is penetrated through the partition in a rotatable connection manner, the output end of the rotating motor is penetrated through the top of the support column in a rotatable connection manner, the circumferential outer wall of the rotating tube is connected with a conical ring 1, and the top of the support column is provided with a conical ring 2, and the outer wall of the conical ring 1 matches the outer wall of the conical ring 2.

[0013] By adopting the above technical solution, when the output end of the rotating motor drives the feed pipe to rotate, the outer wall of the conical ring 1 and the outer wall of the conical ring 2 slide relative to each other, so that the conical ring 1 and the rotating pipe rotate around their own central axis under the action of friction, driving the internal crushing blades to rotate and crushing the agglomerated powder. The conical ring 2 can also provide support for the conical ring 1, which is conducive to improving the stability of the device.

[0014] Optionally, a bevel gear 1 capable of replacing the conical ring 1 is provided on the circumferential outer wall of the rotating tube, and a bevel gear 2 capable of replacing the conical ring 2 is provided on the top of the support column, and the bevel gear 1 is meshed with the bevel gear 2.

[0015] By adopting the above technical solution, the stability of the device can be further improved.

[0016] Optionally, a connecting rod is provided between the feed pipes above and below the rotating tube.

[0017] Optionally, a conical funnel is connected in series between the inner wall of the discharge hole and the coarse powder pipe, and the diameter of the inner cavity of the conical funnel gradually decreases from top to bottom.

[0018] By adopting the above technical solution, it is convenient to make the coarse powder in the middle of the screen fall downward into the coarse powder pipe, and the conical funnel is provided as a connection, so that the size selection of the coarse powder pipe is more flexible, and it is convenient to coordinate the connection relationship and size of multiple structures.

[0019] Optionally, one side of the vibrating screen body is connected to a fine powder pipe, the fine powder pipe is located below the screen, and the bottom of the inner wall of the fine powder pipe is aligned with the edge of the top surface of the fine powder collecting plate.

[0020] By adopting the above technical solution, the powder falling along the sieve holes of the screen is collected on the fine powder collecting plate and discharged through the fine powder pipe.

[0021] Optionally, the fine powder collecting plate is arranged at an angle, and the end of the fine powder tube is connected to the bottom point of the fine powder collecting plate.

[0022] By adopting the above technical solution, the fine powder on the fine powder collecting plate can be easily moved to the fine powder pipe, so as to facilitate the discharge.

[0023] In summary, the present invention includes the following beneficial technical effects: 1. Before the powder falls onto the screen, the powder is crushed to facilitate subsequent screening. When feeding, the powder is sprinkled on the outer edge of the screen along the circumference of the screen to improve the powder accumulation and extend the service life of the device. The push plate pushes the powder so that the powder moves from the outer edge of the screen to the middle of the screen along the vortex channel. The vibration of the vibrating screen body is conducive to flattening the powder. At the same time, it can extend the residence time of the powder on the screen and improve the screening quality.

[0024] 2. A conical funnel is set and the fine powder collecting plate is tilted to facilitate the collection of coarse powder and fine powder after screening. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The overall structure of the embodiment of the present invention is shown in FIG. Figure 1 ; Figure 2 The overall structure of the embodiment of the present invention is shown in FIG. Figure 2 ; Figure 3 It is a cross-sectional schematic diagram of the overall structure of an embodiment of the present invention; Figure 4 for Figure 3 A partial enlarged schematic diagram of part A; Figure 5 Schematic diagram of the structure of the partition plate and the push plate in the embodiment of the present invention.

[0026] Explanation of the reference numerals in the accompanying drawings: 1. Support seat; 2. Vibrating screen body; 3. Screen; 4. Screening auxiliary assembly; 41. Feed pipe; 42. Partition; 43. Push plate; 44. Rotating pipe; 45. Crushing blade; 5. Discharging assembly; 51. Discharging hole; 52. Coarse powder pipe; 53. Fine powder collecting plate; 54. Fine powder pipe; 55. Conical funnel; 6. Rotation control assembly; 61. Rotating motor; 62. Support column; 63. Conical ring one; 64. Conical ring two. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0028] The following is combined with Figure 1 -Attached Figure 5 The present invention is described in further detail.

[0029] The embodiment of the present invention discloses a stainless steel round powder screening machine. Figures 1 to 5A stainless steel circular powder screening machine comprises a support base 1, a vibrating screen body 2, a screen mesh 3, a screening auxiliary component 4, a material discharge component 5 and a rotation control component 6. The vibrating screen body 2 and the screen mesh 3 vibrate vertically back and forth relative to the support base 1 to improve the screening effect. The screening auxiliary component 4 can realize the distribution of powder and change the moving path to reduce the accumulation of powder, and can crush the agglomerated powder to improve the screening quality. The material discharge component 5 is used to collect the coarse powder and fine powder after screening respectively. The rotation control component 6 is used to drive the structure in the screening auxiliary component 4 to rotate to ensure the function of the screening auxiliary component 4.

[0030] Reference Figure 1 and Figure 2 The support seat 1 is placed vertically on the horizontal ground, and the top and bottom of the support seat 1 are penetrated. The support seat 1 is used to provide support for the vibrating screen body 2. The support seat 1 and the vibrating screen body 2 are connected by multiple vibration springs. A vibration motor is arranged between the support seat 1 and the vibrating screen body 2. Under the action of the vibration motor and the vibration spring, the vibrating screen body 2 is made to vibrate vertically to improve the screening effect of the screen 3. The screen 3 is horizontally arranged and fixedly connected to the circumferential side wall inside the vibrating screen body 2, and the fine powder falls down along the sieve holes on the screen 3. A top cover is arranged on the top of the vibrating screen body 2, and the top cover is used to cover the screen 3 and other structures to improve the stability and safety of the device.

[0031] Reference Figure 3 and Figure 4 The screening auxiliary component 4 includes a feed pipe 41, a partition plate 42, a push plate 43, a rotating tube 44 and a crushing blade 45.

[0032] The feed pipe 41 is arranged above the vibrating screen body 2, and the discharge port at the bottom end of the feed pipe 41 is vertically downward and corresponds to the outer edge of the screen 3, and the powder falls along the feed pipe 41 to the outer edge of the screen 3. The feed pipe 41 can rotate around the central axis of the screen 3. The partition 42 is rotatably connected to the circumferential side wall inside the vibrating screen body 2, and the partition 42 is sleeved on the circumferential outer side wall at the bottom of the feed pipe 41 in a fixed connection manner, and the partition 42 rotates synchronously with the feed pipe 41. The push plate 43 extends in a spiral shape from the center of the screen 3 to the outer edge of the screen 3, and the top surface of the push plate 43 is fixedly connected to the bottom surface of the partition 42.

[0033] Reference Figure 3 and Figure 5 , the push plate 43 extends in the clockwise direction, and the feed pipe 41 rotates in the clockwise direction. Figure 5 4 shows a bottom view of the push plate 43, which is located below the partition 42 when in use. Ensure that the rotation direction of the feed pipe 41 is consistent with the vortex direction of the push plate 43, so that the powder can be smoothly pushed by the push plate 43 and move toward the middle of the screen 3.

[0034] The feed pipe 41, the partition 42 and the push plate 43 rotate synchronously, and the powder falls onto the screen 3 through the feed pipe 41. As the feed pipe 41 rotates, the powder is sprinkled along the circumference of the screen 3 and falls on the outer edge of the screen 3. The vortex-shaped push plate 43 cooperates with the screen 3 and the partition 42 to form a vortex-shaped powder flow channel. The push plate 43 pushes the powder on the screen 3, so that the powder moves along the vortex-shaped flow channel from the edge of the screen 3 to the middle of the screen 3.

[0035] Compared with the previous method where the powder directly falls into the middle of the screen 3, this solution can improve the accumulation of powder on the screen 3. In this solution, the degree of damage caused by the metal powder to the screen 3 is relatively uniform, which can extend the service life of the device. The common rotation of the screen 3 is changed to the rotation of the push plate 43, and the push plate 43 is used to push the powder to move, which is conducive to pushing away the powder on the screen 3, expanding the contact area between the powder and the screen 3, and reducing the accumulation of powder. At the same time, it can change the movement path of the powder, thereby extending the residence time of the powder on the screen 3, thereby achieving the purpose of improving the screening effect. The partition 42 can prevent the powder on the screen 3 from escaping to the outside of the vibrating screen body 2 during the movement, and can provide a stable connection relationship for the push plate 43, which is conducive to improving the stability of the device.

[0036] Reference Figure 3 and Figure 4 The rotating tube 44 is connected in series to the middle of the feed tube 41, and the rotating tube 44 divides the feed tube 41 into two parts, the upper and lower parts of the rotating tube 44 are both rotatably connected to the upper and lower parts of the feed tube 41, and the rotating tube 44 rotates around its own axis. A plurality of spiral crushing blades 45 are fixedly connected to the inner wall of the rotating tube 44.

[0037] The powder enters the rotating tube 44. As the rotating tube 44 rotates, the plurality of crushing blades 45 cooperate with the inner wall of the rotating tube 44 to effectively crush the agglomerated powder, thereby facilitating subsequent screening and improving the screening quality.

[0038] Furthermore, the upper and lower parts of the feed pipe 41 are fixedly connected by a connecting rod to improve the stability of the device.

[0039] Reference Figure 3 The feeding assembly 5 includes a feeding hole 51 , a coarse powder pipe 52 , a fine powder collecting plate 53 and a fine powder pipe 54 .

[0040] The discharge hole 51 is opened in the middle of the screen 3. The push plate 43 pushes the powder on the screen 3 to move the powder along a vortex path, and the fine powder falls downward through the mesh holes of the screen 3, and the coarse powder remains on the screen 3, moves to the middle of the screen 3 under the pushing action of the push plate 43, and falls downward along the discharge hole 51. The top end of the coarse powder pipe 52 is connected to the discharge hole 51, and the bottom end of the coarse powder pipe 52 passes through the vibrating screen body 2 and the support seat 1 and extends to the outside of the support seat 1, which is convenient for the discharge and collection of the coarse powder.

[0041] Reference Figure 3 Furthermore, a conical funnel 55 is connected in series between the top of the coarse powder pipe 52 and the inner wall of the feeding hole 51. The conical funnel 55 is vertically penetrated, and the diameter of the inner cavity of the conical funnel 55 gradually decreases from top to bottom. It is convenient for the coarse powder in the middle of the screen 3 to fall downward into the coarse powder pipe 52. The conical funnel 55 is provided as a connection, so that the size selection of the coarse powder pipe 52 is more flexible, and it is convenient to coordinate the connection relationship and size of multiple structures.

[0042] The fine powder collecting plate 53 is fixedly connected to the circumferential side wall of the internal cavity of the vibrating screen body 2, and the fine powder collecting plate 53 is arranged below the screen 3, and the coarse powder pipe 52 passes through the fine powder collecting plate 53. The fine powder screened by the screen 3 falls onto the fine powder collecting plate 53. The fine powder pipe 54 is connected to the inside of the vibrating screen body 2, and the inner wall of the end of the fine powder pipe 54 is flush with the outer edge of the top surface of the fine powder collecting plate 53. The fine powder collecting plate 53 is arranged obliquely, and the fine powder pipe 54 is connected to the bottom point of the fine powder collecting plate 53, which is conducive to the powder moving along the fine powder collecting plate 53 to the fine powder pipe 54 and discharging.

[0043] Reference Figure 3 and Figure 4 The rotation control assembly 6 includes a rotation motor 61, a support column 62, a conical ring 1 63 and a conical ring 2 64.

[0044] The rotating motor 61 is arranged at the bottom of the vibrating screen body 2, and the output end of the rotating motor 61 extends upward. The output end of the rotating motor 61 passes through the coarse powder pipe 52, the screen 3 and the partition 42. The output end of the rotating motor 61 is connected to the circumferential outer side wall of the feed pipe 41. When the rotating motor 61 is started, the output end rotates, driving the feed pipe 41 to rotate around the central axis of the screen 3.

[0045] The support column 62 is arranged above the coarse powder tube 52, and a plurality of vertical rods are arranged between the bottom surface of the support column 62 and the top of the coarse powder tube 52. The plurality of vertical rods are arranged along the circumference of the coarse powder tube 52, so that the support column 62 is fixed relative to the vibrating screen body 2, and the coarse powder moves into the coarse powder tube 52 along the interval between two adjacent vertical rods. The top of the support column 62 passes upward through the partition 42 and extends above the partition 42, and the support column 62 rotates relative to the partition 42. The output end of the rotating motor 61 extends upward from the internal cavity of the support column 62 and passes through the top of the support column 62, and the output end of the rotating motor 61 rotates relative to the support column 62 to ensure the stable operation of the device.

[0046] The conical ring 1 63 is fixedly sleeved on the circumferential outer wall of the rotating tube 44, and the conical ring 2 64 is fixedly sleeved on the top of the support column 62, and the inclined surface of the conical ring 1 63 matches the inclined surface of the conical ring 2 64. As the feed tube 41 rotates around the central axis of the screen 3, the outer wall of the conical ring 1 63 and the outer wall of the conical ring 2 64 slide relative to each other, so that the conical ring 1 63 and the rotating tube 44 rotate around their own central axis under the action of friction, driving the internal crushing blades 45 to rotate and crushing the agglomerated powder. The conical ring 2 64 can also provide support for the conical ring 1 63, which is conducive to improving the stability of the device.

[0047] Reference Figure 4 Furthermore, bevel gear 1 can be used to replace bevel ring 1 63, bevel gear 2 can be used to replace bevel ring 2 64, and bevel gear 1 and bevel gear 2 can be meshed. This enables the rotating tube 44 to stably rotate around its own central axis.

[0048] Reference Figure 3 and Figure 4 Furthermore, in other embodiments, a support structure may be provided on the support frame or the vibrating screen body 2, and a rotation source driving member may be provided on the support structure to directly drive the feed pipe 41, the partition plate 42 and the push plate 43 to rotate around the central axis of the screen 3, and drive the rotating tube 44 to rotate around its own central axis. For example, a plurality of rods may be provided above the vibrating screen body 2 for support, a rotation source may be provided on the rods, and the output end of the rotation source may be connected to the middle of the partition plate 42, so as to achieve the purpose of driving the rotation. This will not be described in detail here. In this embodiment, by providing a rotating motor 61, a support column 62, a conical ring 1 63 and a conical ring 2 64, multiple structures can be driven to rotate synchronously.

[0049] The implementation principle of a stainless steel round powder screening machine according to the embodiment of the present invention is as follows: The vibration motor is started, the vibration screen body 2 vibrates vertically back and forth, and the screen mesh 3, the push plate 43 and the rotating motor 61 vibrate synchronously.

[0050] Start the rotating motor 61, the output end drives the feed pipe 41 to rotate, and the feed pipe 41, the partition plate 42 and the push plate 43 rotate synchronously around the central axis of the screen 3. The conical ring 1 63 slides relative to the conical ring 2 64, so that the conical ring 1 63 and the rotating pipe 44 rotate around their own central axes, driving the internal crushing blades 45 to rotate.

[0051] The powder enters from the top of the feed pipe 41 and passes through the crushing blades 45, where the agglomerated powder is crushed, thereby reducing the waste of powder and improving the utilization rate.

[0052] The powder continues to move downward, and falls to the outer edge of the screen 3 through the bottom of the feed pipe 41. As the feed pipe 41 rotates, the powder falls along the circumference of the screen 3. This can improve the situation in which the screen 3 is severely worn due to the continuous feeding of powder to the part of the screen 3, which is conducive to extending the service life of the screen 3; it can also improve the occurrence of powder accumulation, which is conducive to controlling the thickness and uniformity of the powder.

[0053] As the push plate 43 rotates, the powder on the screen 3 moves along the vortex channel formed by the push plate 43, the partition plate 42 and the screen 3. The powder moves along the vortex channel from the outer edge of the screen 3 to the inside of the screen 3, further reducing the occurrence of powder accumulation. During the pushing process, the vibrating screen body 2 continues to vibrate, so that the powder can move smoothly.

[0054] During the powder movement, the fine powder falls down through the sieve holes onto the fine powder collecting plate 53 and is discharged through the fine powder pipe 54. The fine powder collecting plate 53 is tilted and vibrates to promote the fine powder to flow to the fine powder pipe 54. The coarse powder moves to the middle of the screen 3 under the push of the push plate 43, and flows to the outside of the vibrating screen body 2 through the conical funnel 55 and the coarse powder pipe 52 for collection.

[0055] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A stainless steel circular powder screening machine, comprising a vibrating screen body (2) and a screen (3) arranged horizontally and connected to the inner circumferential side wall of the vibrating screen body (2), characterized in that: Also includes: A feed pipe (41) is provided on the vibrating screen body (2) and has a bottom discharge port corresponding to the outer edge of the screen (3); a horizontally placed partition (42) is fixedly connected to the bottom outer wall of the feed pipe (41); the partition (42) is rotatably connected to the circumferential side wall inside the vibrating screen body (2); a vortex-shaped push plate (43) is connected to the bottom surface of the partition (42); and the bottom surface of the push plate (43) is connected to the top surface of the screen (3); A rotating tube (44) is connected in series in the middle of the feed tube (41), and a spiral crushing blade (45) is fixedly connected to the inner wall of the rotating tube (44); The vibrating screen body (2) is provided with a rotation control assembly (6) for driving the feed pipe (41), the partition plate (42) and the push plate (43) to rotate synchronously and for driving the rotating pipe (44) to rotate relative to the feed pipe (41), and the rotation direction of the feed pipe (41) is consistent with the vortex direction of the push plate (43); A material discharge hole (51) is provided in the middle of the screen (3) and is connected to a coarse powder pipe (52) extending downward to the outside of the vibrating screen body (2). A fine powder collecting plate (53) located below the screen (3) is provided in the vibrating screen body (2).

2. A stainless steel round powder screening machine according to claim 1, characterized in that: The rotation control assembly (6) comprises a rotating motor (61), the rotating motor (61) being connected to the bottom of the vibrating screen body (2), and the output end of the rotating motor (61) passing upward through the coarse powder pipe (52) and connected to the outer side wall of the feed pipe (41).

3. A stainless steel round powder screening machine according to claim 2, characterized in that: The rotation control assembly (6) further comprises a support column (62), the bottom of the support column (62) being connected to the coarse powder pipe (52) via a plurality of circumferentially arranged vertical rods, the top of the support column (62) being rotatably connected and penetrating the partition plate (42), the output end of the rotating motor (61) being rotatably connected and penetrating the top of the support column (62), the circumferential outer wall of the rotating pipe (44) being connected to a conical ring 1 (63), the top of the support column (62) being provided with a conical ring 2 (64), the outer wall of the conical ring 1 (63) matching the outer wall of the conical ring 2 (64).

4. A stainless steel round powder screening machine according to claim 3, characterized in that: The outer circumferential wall of the rotating tube (44) is provided with a bevel gear 1 capable of replacing the first conical ring (63), and the top of the support column (62) is provided with a bevel gear 2 capable of replacing the second conical ring (64), and the bevel gear 1 is meshed with the bevel gear 2.

5. A stainless steel round powder screening machine according to claim 1, characterized in that: A connecting rod is provided between the feed pipe (41) located above and below the rotating pipe (44).

6. A stainless steel round powder screening machine according to claim 1, characterized in that: A conical funnel (55) is connected in series between the inner wall of the discharge hole (51) and the coarse powder pipe (52), and the diameter of the inner cavity of the conical funnel (55) gradually decreases from top to bottom.

7. A stainless steel round powder screening machine according to claim 1, characterized in that: One side of the vibrating screen body (2) is connected to a fine powder pipe (54), the fine powder pipe (54) is located below the screen (3), and the bottom of the inner wall of the fine powder pipe (54) is aligned with the edge of the top surface of the fine powder collecting plate (53).

8. A stainless steel round powder screening machine according to claim 7, characterized in that: The fine powder collecting plate (53) is arranged obliquely, and the end of the fine powder tube (54) is connected to the bottom point of the fine powder collecting plate (53).

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