Boron carbide powder grading device

Abstract

The invention relates to the technical field of grading devices, in particular to a boron carbide powder grading device which comprises a base, a sorting assembly is rotationally arranged on the base, a power assembly used for driving the sorting assembly to rotate is arranged on the base, and the sorting assembly comprises a cylinder rotationally arranged on the base and provided with a power assembly used for driving the sorting assembly to rotate. The barrel is driven to rotate through the power assembly; the screening barrel I is fixedly connected to the interior of the barrel body and is used for carrying out primary screening on the boron carbide powder material; the second screening barrel is arranged in the barrel body, arranged outside the first screening barrel in a sleeving mode and used for conducting second-stage screening on the screen underflow obtained after first-stage screening; the base is provided with a driving module used for driving the second screening barrel to rotate and move up and down. The screening device has the beneficial effects that the height of the second screening barrel can be adjusted through the driving module according to the actual condition of the material amount, and the situation that when the material amount is large, due to the small distance, materials enter the upper layer for screening operation again is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of classifying devices, and in particular to a boron carbide powder classifying device. Background Art

[0002] In the production and application of boron carbide powder, it is particularly important to classify boron carbide powder. At present, there are many powder classification devices on the market, among which the drum screen is a common classification equipment and has been widely used in the classification of boron carbide powder;

[0003] Among the existing powder classification devices, the drum screen is widely used in the classification of various powder materials due to its simple structure, convenient operation, and high classification efficiency. The drum screen is usually equipped with multiple sieve cylinders with different mesh sizes. These sieve cylinders rotate and vibrate to screen the materials according to the particle size, thereby achieving the classification of powders;

[0004] When using a drum screen to classify boron carbide powder, the material enters from one end of the drum, and as the drum rotates and vibrates, the material is screened inside the screen drum. Screen drums with different mesh sizes can intercept powders of different particle sizes, thereby achieving powder classification. However, there are still some problems with drum screens in practical applications;

[0005] Fixed spacing between screen drums: The spacing between screen drums inside the drum screen is usually fixed, which means that when there is a lot of material inside a certain screen drum, the spacing between the screen drums cannot be adjusted according to the material conditions. This makes it easy for the material to re-enter the upper screen drum during the screening process, resulting in inaccurate graded screening;

[0006] Equipment maintenance is difficult: During the use of the drum screen, the screen cylinder is easily worn and blocked, and needs to be maintained and replaced regularly; however, since the drum screen has a certain length and the spacing between the screen cylinders inside the drum screen is small, the operating space is severely limited; the operating space is small, making it difficult to carry out efficient maintenance and replacement work.

[0007] Therefore, a boron carbide powder classification device is needed to overcome the occurrence of the above problems. Summary of the invention

[0008] In order to solve the above problems, an embodiment of the present invention provides a boron carbide powder classification device, which achieves the purpose of solving the problems raised in the background technology.

[0009] In order to achieve the above-mentioned purpose, the embodiment of the present invention specifically adopts the following technical scheme: a boron carbide powder grading device, comprising a base, a sorting component is rotatably arranged on the base, a power component for driving the sorting component to rotate is arranged on the base, and the sorting component comprises: a cylinder, which is rotatably arranged on the base and driven to rotate by the power component; a screening cylinder 1, which is fixedly connected to the inside of the cylinder and is used for primary screening of the boron carbide powder material; a screening cylinder 2, which is arranged inside the cylinder and sleeved on the outside of the screening cylinder 1, and is used for secondary screening of the screened material after the primary screening; a driving module for driving the screening cylinder 2 to rotate and move up and down is arranged on the base.

[0010] As a further improvement of the above technical solution:

[0011] The driving module includes a frame body arranged on the base, a baffle fixedly connected to the frame body, a motor 1 arranged on the baffle, a gear 1 arranged at the output end of the motor 1, a gear ring 1 fixedly connected to the outside of the screening drum 2 and meshing with the gear 1, and an electric push rod arranged on the frame body for adjusting the height of the baffle;

[0012] Wherein, the second screening drum is rotatably arranged inside the baffle.

[0013] The second screening cylinder comprises a second discharge end rotatably arranged inside the baffle and a second screening cylinder fixedly connected to one side of the second discharge end; the second screening cylinder abuts against the inside of the cylinder body, and a second sealing ring is arranged between the second screening cylinder and the cylinder body.

[0014] The baffle is arranged at the opening of the cylinder, and a sealing ring is arranged between the cylinder and the baffle.

[0015] The baffle is provided with a discharge assembly, which includes a notch opened on the baffle, a discharge part fixedly connected to the notch, a guide rail fixedly connected to the discharge part, and a plug plate elastically slidably arranged inside the guide rail through a spring.

[0016] The driving module includes a screw rod arranged inside the base for rotating, and a motor 2 arranged on the base for driving the screw rod to rotate;

[0017] The frame is slidably arranged inside the base, and the screw is threadedly connected inside the frame.

[0018] The screening cylinder 1 comprises a screening cylinder 1 fixedly connected to the inside of the cylinder body and a discharge end 1 fixedly connected to one end of the screening cylinder 1.

[0019] The frame body is provided with a bracket for supporting the discharging end, and the end of the bracket is provided with a roller attached to one side of the discharging end.

[0020] The interior of the cylinder, the interior of the first screening cylinder, and the interior of the second screening cylinder are all provided with spiral blades.

[0021] The power assembly comprises a second gear ring fixedly connected to the outside of the cylinder, a third motor arranged on the base, and a second gear arranged at the output end of the third motor.

[0022] The beneficial effects of the embodiments of the present invention are:

[0023] In actual use, the material is added into the interior of the screening cylinder 1, and as the power component drives the cylinder body and the screening cylinder 1 to rotate, the material inside the screening cylinder 1 is subjected to primary screening through the screening cylinder 1, and the screened material (primary material) after the primary screening is screened to the interior of the screening cylinder 1 and discharged as the screening cylinder 1 rotates, and the screened material after the primary screening falls into the interior of the screening cylinder 2, and as the driving module drives the screening cylinder 2 to rotate, secondary screening is performed, and the screened material (secondary material) after the secondary screening is screened to the interior of the screening cylinder 2 and discharged as the screening cylinder 2 rotates, and the screened material (tertiary material) after the secondary screening falls into the interior of the cylinder body and is discharged as the cylinder body rotates; that is, the screening of the material is achieved through the cylinder body, the screening cylinder 1 and the screening cylinder 2, and the material is classified into three levels, thereby achieving the classification of the material;

[0024] In actual use, since the cylinder, screening cylinder one and screening cylinder two are all cylindrical, the materials gather at the bottom of the cylinder, screening cylinder one and screening cylinder two; if the amount of secondary material is large, the height of screening cylinder two can be lowered through the driving module, thereby increasing the distance between the bottom of screening cylinder two and the bottom of screening cylinder one, so that screening cylinder two can accommodate more secondary material; if the amount of tertiary material is large, the height of screening cylinder two can be raised through the driving module, thereby increasing the distance between the bottom of screening cylinder two and the bottom of the cylinder, so that the cylinder can accommodate more tertiary material; the height of screening cylinder two can be adjusted through the driving module according to the actual amount of material, so as to avoid the situation where the material re-enters the upper screening operation due to the small distance when the amount of material is large;

[0025] In the present application, the driving source for driving the second screening drum to rotate and the driving source for driving the drum body and the first screening drum to rotate are different driving sources, so that the speed difference between the second screening drum and the drum body can be adjusted according to actual conditions, which is convenient for the actual screening operation;

[0026] When maintenance is needed, the frame is extended from the base, so that the screening cylinder 2 is separated from the interior of the cylinder, and there is sufficient operating space when maintaining the screening cylinder 2. At the same time, after the screening cylinder 2 is separated from the interior of the cylinder, there is also sufficient operating space between the screening cylinder 1 and the cylinder, which is convenient for maintenance work. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the first viewing angle of the present invention;

[0028] Figure 2 It is a structural schematic diagram of the second viewing angle of the present invention;

[0029] Figure 3 It is a cross-sectional schematic diagram of the present invention;

[0030] Figure 4 for Figure 3 A schematic diagram of the structure enlargement at the center A;

[0031] Figure 5 It is a structural schematic diagram of the driving module of the present invention;

[0032] Figure 6 It is a structural schematic diagram of the cylinder of the present invention.

[0033] In the figure: 1. Base; 2. Sorting component; 3. Power component; 4. Driving module; 5. Spiral blade; 6. Discharging component;

[0034] 21. Cylinder body; 22. Screening cylinder 1; 23. Screening cylinder 2;

[0035] 31. Gear ring 2; 32. Motor 3; 33. Gear 2;

[0036] 41. frame; 42. baffle; 43. motor 1; 44. gear 1; 45. gear ring 1; 46. electric push rod; 47. screw rod; 48. motor 2; 49. bracket; 410. roller;

[0037] 61. notch; 62. discharge portion; 63. guide rail; 64. spring; 65. insert plate;

[0038] 221, screen drum one; 222, discharge end one;

[0039] 231. Screen drum two; 232. Discharge end two. DETAILED DESCRIPTION

[0040] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0041] See also Figures 1 to 6 The embodiment of the present invention discloses a boron carbide powder classification device, including a base 1, a sorting component 2 is rotatably arranged on the base 1, a power component 3 for driving the sorting component 2 to rotate is arranged on the base 1, and the sorting component 2 includes:

[0042] The cylinder 21 is rotatably mounted on the base 1 and driven to rotate by the power assembly 3;

[0043] The screening cylinder 22 is fixedly connected to the inside of the cylinder 21 and is used for primary screening of the boron carbide powder material;

[0044] The second screening cylinder 23 is arranged inside the cylinder body 21 and sleeved outside the first screening cylinder 22, and is used for performing secondary screening on the screened material after the primary screening; the mesh number of the second screening cylinder 23 is greater than the mesh number of the first screening cylinder 22;

[0045] The base 1 is provided with a driving module 4 for driving the screening drum 23 to rotate and move up and down;

[0046] In actual use, the material is added into the interior of the screening cylinder 22, and as the power assembly 3 drives the cylinder 21 and the screening cylinder 22 to rotate, the material inside the screening cylinder 22 is subjected to primary screening through the screening cylinder 22, and the screened material (primary material) after the primary screening is screened into the interior of the screening cylinder 22 and discharged as the screening cylinder 22 rotates, and the screened material after the primary screening falls into the interior of the screening cylinder 23, and as the driving module 4 drives the screening cylinder 23 to rotate, secondary screening is performed, and the screened material (secondary material) after the secondary screening is screened into the interior of the screening cylinder 23 and discharged as the screening cylinder 23 rotates, and the screened material (tertiary material) after the secondary screening falls into the interior of the cylinder 21 and is discharged as the cylinder 21 rotates; that is, the screening of the material is achieved through the cylinder 21, the screening cylinder 22, and the screening cylinder 23, and the material is classified into three levels, thereby achieving the classification of the material;

[0047] In actual use, since the cylinder 21, the screening cylinder 1 22, and the screening cylinder 23 are all cylindrical, the materials gather at the bottom of the cylinder 21, the screening cylinder 1 22, and the screening cylinder 2 23; if the amount of secondary materials is large, the height of the screening cylinder 2 23 can be lowered by the driving module 4, thereby increasing the distance between the bottom of the screening cylinder 2 23 and the bottom of the screening cylinder 1 22, so that the screening cylinder 2 23 can accommodate more secondary materials; if the amount of tertiary materials is large, the height of the screening cylinder 2 23 can be raised by the driving module 4, thereby increasing the distance between the bottom of the screening cylinder 23 and the bottom of the cylinder 21, so that the cylinder 21 can accommodate more tertiary materials; the height of the screening cylinder 2 23 can be adjusted by the driving module 4 according to the actual amount of materials, so as to avoid the situation where the materials re-enter the upper screening operation due to the small distance when the amount of materials is large;

[0048] The amount of secondary material is large. When the height of the second screening drum 23 is lowered by the driving module 4, thereby increasing the distance between the bottom of the second screening drum 23 and the bottom of the first screening drum 22, the distance between the bottom of the second screening drum 23 and the bottom of the drum 21 will be reduced, resulting in a small amount of tertiary material that can be accommodated by the drum 21. In actual circumstances, when the amount of secondary material is large, the amount of tertiary material is bound to decrease. This is because the sum of the amount of secondary material plus the amount of tertiary material is the same as the amount of material of the screened material after the first screening. Therefore, the larger the amount of secondary material, the smaller the corresponding amount of tertiary material; similarly, when the amount of tertiary material is large, the smaller the corresponding amount of secondary material. Therefore, when the amount of tertiary material is large, the height of the second screening drum 23 is raised by the driving module 4, and the distance between the bottom of the second screening drum 23 and the bottom of the drum 21 is increased, so that the distance between the bottom of the second screening drum 23 and the first screening drum 22 is small, and the second screening drum 23 is sufficient to accommodate less secondary material.

[0049] As a further illustration of this application:

[0050] In addition to screening boron carbide powder, the present application can also be used for screening other relatively dry powders, particles, etc., and the mesh sizes of the screening cylinder 1 22 and the screening cylinder 2 23 can be adjusted according to actual needs.

[0051] As a further illustration of this application:

[0052] The driving module 4 includes a frame 41 arranged on the base 1, a baffle 42 fixedly connected to the frame 41, a motor 43 arranged on the baffle 42, a gear 44 arranged at the output end of the motor 43, a gear ring 45 fixedly connected to the outside of the screening drum 23 and meshing with the gear 44, and an electric push rod 46 arranged on the frame 41 for adjusting the height of the baffle 42;

[0053] The second screening drum 23 is rotatably arranged inside the baffle 42;

[0054] In actual use, after the motor 1 43 is started, the gear 1 44 is rotated, thereby driving the gear ring 1 45 to rotate, and then driving the screening drum 2 23 to rotate, so that the rotating screening drum 2 23 can perform screening operations on the material;

[0055] The height of the frame 41 can be adjusted by extending and retracting the electric push rod 46, so that the height of the screening drum 23 can be adjusted.

[0056] As a further illustration of this application:

[0057] In the present application, the driving source for driving the rotation of the screening drum 23 and the driving source for driving the cylinder 21 and the screening drum 1 22 are different driving sources, so that the rotation speed difference between the screening drum 23 and the cylinder 21 can be adjusted according to the actual situation, so as to facilitate the actual screening operation; specifically: when the amount of secondary material is large, the rotation speed of the screening drum 23 is reduced, and the rotation speed of the cylinder 21 is increased (equivalent to the rotation speed of the screening drum 1 22), so as to increase the screening time of the secondary material in the screening drum 23 and reduce the screening time of the primary material in the screening drum 1 22. During screening, the material is mainly gathered at a position close to the feed end of the screening drum 1 22. After increasing the rotation speed of the screening drum 1 22, the screened material after the primary screening can be distributed at a position far away from the feed end of the screening drum 1 22, thereby avoiding the screened material after the primary screening from gathering in the same position of the screening drum 23 in large quantities.

[0058] As a further illustration of this application:

[0059] The second screening cylinder 23 includes a second discharge end 232 rotatably disposed inside the baffle 42, and a second screening cylinder 231 fixedly connected to one side of the second discharge end 232; the second screening cylinder 231 abuts against the inside of the cylinder 21, and a second sealing ring is disposed between the second screening cylinder 231 and the cylinder 21; the second sealing ring can be made of rubber or other structures;

[0060] The length of the second screen drum 231 is the same as that of the cylinder body 21. The material is screened by the second screen drum 231, and the material on the screen is discharged through the second discharge end 232;

[0061] The second screen drum 231 abuts against the inside of the cylinder 21 , so that one end of the second screen drum 23 abuts against the inside of the cylinder 21 and the other end is rotatably disposed inside the baffle 42 , thereby achieving support for the second screen drum 23 .

[0062] As a further illustration of this application:

[0063] The baffle 42 is fitted at the opening of the cylinder 21, and a sealing ring 1 is provided between the cylinder 21 and the baffle 42; when the height of the frame 41 is adjusted, the height of the baffle 42 will be adjusted, and the baffle 42 is elliptical, so that the baffle 42 can still close the opening of the cylinder 21 after the height is adjusted; the purpose of closing the cylinder 21 by the baffle 42 is that the particle size of the tertiary material inside the cylinder 21 is smaller, and compared with the primary material and the secondary material, the tertiary material is prone to generate dust as the cylinder 21 rotates, so the baffle 42 is used to close the cylinder 21 to prevent dust from escaping; a sealing ring 1 is provided to seal the connection between the cylinder 21 and the baffle 42, thereby preventing material leakage.

[0064] As a further illustration of this application:

[0065] The baffle plate 42 is provided with a discharge assembly 6, which includes a notch 61 formed on the baffle plate 42, a discharge portion 62 fixedly connected to the notch 61, a guide rail 63 fixedly connected to the discharge portion 62, and a plug plate 65 elastically slidably arranged inside the guide rail 63 by a spring 64;

[0066] As the cylinder 21 rotates, the tertiary materials inside the cylinder 21 are discharged through the slot 61. After the tertiary materials fall into the discharge portion 62, they are transported to the next production position through other conveying components.

[0067] Since the baffle 42 and the cylinder 21 move relative to each other, the notch 61 and the cylinder 21 cannot be completely overlapped. In order to prevent leakage when the third-level material is discharged, the notch 61 and the cylinder 21 are closed by the plug plate 65.

[0068] As the baffle 42 moves, the insert plate 65 is always attached to the bottom of the cylinder 21 under the spring force of the spring 64 , so that the portion where the notch 61 and the cylinder 21 cannot overlap is closed by the insert plate 65 .

[0069] As a further illustration of this application:

[0070] The driving module 4 includes a screw rod 47 rotatably arranged inside the base 1, and a motor 48 arranged on the base 1 for driving the screw rod 47 to rotate;

[0071] The frame 41 is slidably disposed inside the base 1, and the screw rod 47 is threadedly connected inside the frame 41;

[0072] After starting the motor 2 48, the motor 2 48 drives the screw 47 to rotate, so that the frame 41 moves inside the base 1, that is, the frame 41 is extended or retracted on the base 1; a pulley is provided at the bottom of the frame 41, and the pulley is supported on the ground, so that the frame 41 can move on the base 1.

[0073] When maintenance is needed, the frame 41 is extended from the base 1, so that the screening cylinder 23 is separated from the interior of the cylinder 21, and there is sufficient operating space when maintaining the screening cylinder 23. At the same time, after the screening cylinder 23 is separated from the interior of the cylinder 21, there is also sufficient operating space between the screening cylinder 1 22 and the cylinder 21, which is convenient for maintenance work.

[0074] As a further illustration of this application:

[0075] The screening cylinder 22 includes a screening cylinder 221 fixedly connected to the inside of the cylinder 21 and a discharge end 222 fixedly connected to one end of the screening cylinder 221; the length of the screening cylinder 221 is the same as the length of the cylinder 21, the material is screened by the screening cylinder 221, and the screened material is discharged through the discharge end 222.

[0076] As a further illustration of this application:

[0077] The frame 41 is provided with a bracket 49 for supporting the discharging end 222, and the end of the bracket 49 is provided with a roller 410 attached to the side of the discharging end 222;

[0078] In actual use, the bracket 49 is used to support the discharge end 222 to improve the stability of the screening drum 22 during rotation; the roller 410 is provided to reduce the friction between the bracket 49 and the discharge end 222;

[0079] The bracket 49 is arranged on one side of the bottom of the frame 41, that is, the bracket 49 is arranged below the electric push rod 46, so that when the electric push rod 46 adjusts the height of the frame 41, the height of the bracket 49 will not be adjusted; the bracket 49 can always be supported below the screening drum 22; at the same time, when the frame 41 is extended from the base 1, the bracket 49 and the screening drum 22 are separated, that is, the bracket 49 will not occupy the operating space around the screening drum 22, so that the screening drum 22 can be maintained easily.

[0080] As a further illustration of this application:

[0081] The inside of the cylinder 21, the inside of the screening cylinder 1 22, and the inside of the screening cylinder 23 are all provided with spiral blades 5; by providing the spiral blades 5, the cylinder 21, the screening cylinder 1 22, and the screening cylinder 2 23 can discharge the materials inside through the guiding effect of the spiral blades 5 when they rotate;

[0082] One end of the screening drum 23 abuts against the interior of the cylinder 21, and the other end is rotatably set inside the baffle 42, thereby supporting the screening drum 23. The end of the screening drum 23 close to the cylinder 21 is in a closed state. Even when the screening drum 23 is tilted so that it is difficult for the screening drum 23 to abut against the interior of the cylinder 21, the closed end can still prevent the material from leaking out. At the same time, even if the screening drum 23 is tilted, the guiding effect of the spiral blade 5 will not affect the normal screening operation of the screening drum 23 for the material, and will not affect the smooth discharge of the material.

[0083] As a further illustration of this application:

[0084] The power assembly 3 includes a gear ring 2 31 fixedly connected to the outside of the cylinder 21, a motor 32 arranged on the base 1, and a gear 2 33 arranged at the output end of the motor 3 32;

[0085] After the motor 32 is started, the gear 2 33 is rotated, which can drive the gear ring 2 31 to rotate, and can drive the cylinder 21 to rotate.

[0086] It should be noted that in the description of the present invention, the terms "center, up, down, left, right, vertical, horizontal, inside, outside" and other terms indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first, second, third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0087] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "install, connect, connect" 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.

[0088] The term "comprise" or any other similar term is intended to cover a non-exclusive inclusion, such that a process, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, article, or apparatus / device.

[0089] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A boron carbide powder classification device, comprising a base (1), a sorting assembly (2) rotatably arranged on the base (1), and a power assembly (3) for driving the sorting assembly (2) to rotate arranged on the base (1), characterized in that: The sorting component (2) comprises: The cylinder (21) is rotatably mounted on the base (1), and is driven to rotate by a power assembly (3); A screening cylinder (22) is fixedly connected to the inside of the cylinder (21) and is used for primary screening of the boron carbide powder material; The second screening cylinder (23) is arranged inside the cylinder body (21) and sleeved outside the first screening cylinder (22), and is used for performing secondary screening on the screened material after the primary screening; The base (1) is provided with a driving module (4) for driving the second screening drum (23) to rotate and move up and down.

2. The boron carbide powder classification device according to claim 1, characterized in that: The driving module (4) comprises a frame (41) arranged on the base (1), a baffle (42) fixedly connected to the frame (41), a motor (43) arranged on the baffle (42), a gear (44) arranged at the output end of the motor (43), a gear ring (45) fixedly connected to the outside of the screening drum (23) and meshing with the gear (44), and an electric push rod (46) arranged on the frame (41) for adjusting the height of the baffle (42); Wherein, the second screening drum (23) is rotatably arranged inside the baffle (42).

3. The boron carbide powder classification device according to claim 2, characterized in that: The second screening drum (23) comprises a second discharge end (232) rotatably arranged inside the baffle (42) and a second screening drum (231) fixedly connected to one side of the second discharge end (232); the second screening drum (231) abuts against the inside of the cylinder (21), and a second sealing ring is arranged between the second screening drum (231) and the cylinder (21).

4. The boron carbide powder classification device according to claim 2, characterized in that: The baffle (42) is arranged in close contact with the opening of the cylinder (21), and a sealing ring (1) is arranged between the cylinder (21) and the baffle (42).

5. The boron carbide powder classification device according to claim 4, characterized in that: The baffle plate (42) is provided with a discharge assembly (6), and the discharge assembly (6) comprises a notch (61) formed on the baffle plate (42), a discharge portion (62) fixedly connected to the notch (61), a guide rail (63) fixedly connected to the discharge portion (62), and a plug plate (65) elastically slidably arranged inside the guide rail (63) via a spring (64).

6. The boron carbide powder classification device according to claim 2, characterized in that: The driving module (4) comprises a screw rod (47) rotatably arranged inside the base (1), and a second motor (48) arranged on the base (1) and used for driving the screw rod (47) to rotate; The frame (41) is slidably arranged inside the base (1), and the screw rod (47) is threadedly connected inside the frame (41).

7. The boron carbide powder classification device according to claim 6, characterized in that: The screening cylinder (22) comprises a screening cylinder (221) fixedly connected to the inside of the cylinder body (21) and a discharge end (222) fixedly connected to one end of the screening cylinder (221).

8. The boron carbide powder classification device according to claim 7, characterized in that: The frame body (41) is provided with a bracket (49) for supporting the first discharge end (222), and the end of the bracket (49) is provided with a roller (410) which is attached to the side of the first discharge end (222).

9. The boron carbide powder classification device according to claim 1, characterized in that: The interior of the cylinder (21), the interior of the first screening cylinder (22), and the interior of the second screening cylinder (23) are all provided with spiral blades (5).

10. The boron carbide powder classification device according to claim 1, characterized in that: The power assembly (3) comprises a second gear ring (31) fixedly connected to the outside of the cylinder (21), a third motor (32) arranged on the base (1), and a second gear (33) arranged at the output end of the third motor (32).

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