Boron carbide crushing device

Abstract

The invention relates to the technical field of crushing devices, in particular to a boron carbide crushing device which comprises a crushing main body, a boron carbide crushing device, a boron carbide crushing device and a boron carbide crushing device which are sequentially arranged in the material moving direction, the crushing main body is used for crushing the boron carbide material, the screening main body is used for screening the crushed boron carbide material, and the backflow main body is used for enabling the screened boron carbide material to flow back into the crushing main body; a screening assembly used for conducting secondary screening on the boron carbide materials is arranged between the screening body and the backflow body. The screening device has the beneficial effects that materials screened by the screening main body enter the interior of the backflow main body through the screening assembly, the materials firstly enter the interior of the screening bin after passing through the screening assembly, and the materials are screened again through the screening plate after falling on the screening plate; therefore, the materials which meet the particle size requirement and are doped in the materials are screened out, the materials are prevented from flowing back to the crushing main body, the over-grinding phenomenon is reduced, meanwhile, the backflow amount of the materials is reduced, and the working load of the crushing main body is reduced.

Description

Technical Field

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

[0002] In the field of material processing, the crushing and screening of hard materials such as boron carbide is a crucial link. Traditional boron carbide crushing devices usually include three core parts: crushing body, screening body and reflux body. This process design aims to perform preliminary physical crushing of the original material through the crushing body, and then use the screening body to screen the particle size of the crushed material to ensure that the particle size of the final product meets specific requirements.

[0003] Specifically, the crushing body applies external force to the material through its internal crushing mechanism (such as hammer crusher, jaw crusher, etc.) to crush it into smaller particles. Subsequently, these crushed materials are sent to the screening body for further particle size screening. Screens with different apertures are usually set inside the screening body to separate materials that meet the particle size requirements and materials that do not meet the requirements. The materials that meet the requirements are discharged through the screen, while the materials that do not meet the requirements are sent back to the crushing body through the reflux body for secondary crushing.

[0004] However, the traditional boron carbide crushing device has significant limitations in the screening process. Since the main purpose of the screening body is to perform preliminary screening of the crushed materials, in order to adapt to the crushing output, its screening time is short, resulting in limited screening accuracy, which often leads to some materials that have met the particle size requirements being misjudged as not meeting the requirements, and therefore being sent to the reflux body for unnecessary secondary crushing. These materials with smaller particle sizes are prone to over-grinding during the secondary crushing process, that is, they are over-crushed into smaller particles, thereby reducing the dispersion uniformity of the particle size in the final product. This not only affects the grading effect of the material, but may also lead to waste of resources and increased costs.

[0005] In addition, due to the misjudgment caused by insufficient screening accuracy, the amount of material flowing back into the crushing body increases. This not only increases the workload of the crushing body, but also may reduce the crushing efficiency of the entire crushing device. Therefore, how to improve the screening link of the boron carbide crushing device, improve the screening accuracy, and reduce the over-grinding phenomenon has become a problem that needs to be solved urgently. Summary of the invention

[0006] In order to solve the above problems, an embodiment of the present invention provides a boron carbide crushing device, which achieves the purpose of solving the problems raised in the background technology.

[0007] In order to achieve the above-mentioned purpose, the embodiment of the present invention specifically adopts the following technical scheme: a boron carbide crushing device, comprising:

[0008] A crushing body, used for crushing boron carbide materials;

[0009] The screening body is used to screen the crushed boron carbide material, and

[0010] A reflux body, used to return the screened boron carbide material to the crushing body;

[0011] A screening component for secondary screening of the boron carbide material is arranged between the screening body and the reflux body;

[0012] The screening component comprises a screening bin which is connected and arranged on the reflux body and is arranged obliquely, a screening plate arranged inside the screening bin, and a discharge pipe which is connected and arranged at the bottom of the screening bin.

[0013] As a further improvement of the above technical solution:

[0014] The screening body comprises a base, a sorting assembly is rotatably arranged on the base, a power assembly for driving the sorting assembly to rotate is arranged on the base, and the sorting assembly comprises:

[0015] The cylinder is rotatably arranged on the base and driven to rotate by a power assembly;

[0016] Screening cylinder 1, fixedly connected to the inside of the cylinder, is used for primary screening of boron carbide powder materials;

[0017] The second screening cylinder is arranged inside the cylinder body and sleeved on the outside of the first screening cylinder, and is used for performing secondary screening on the screened material after the primary screening.

[0018] One end of the screening cylinder 1 is provided with a first material receiving ring for receiving materials, and one end of the screening cylinder 2 is provided with a second material receiving ring for receiving materials;

[0019] The bottom of the first material receiving ring is connected to a first material discharge pipe, and the bottom of the second material receiving ring is connected to a second material discharge pipe;

[0020] The two sieve plates are provided, and the two sieve plates divide the interior of the sieving bin into chamber one, chamber two and chamber three;

[0021] The feed pipe 1 is connected to the chamber 1, the feed pipe 2 is connected to the chamber 2, and the discharge pipe is connected to the chamber 3.

[0022] The base is provided with a driving module for driving the second screening drum to rotate and move up and down.

[0023] The driving module includes a frame arranged on a base, a baffle fixedly connected to the frame, 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 a screening drum 2 and meshing with the gear 1, and an electric push rod arranged on the frame for adjusting the height of the baffle; wherein the screening drum 2 is rotatably arranged inside the baffle.

[0024] The baffle is fitted at the opening of the cylinder, and a sealing ring 1 is arranged between the cylinder and the baffle;

[0025] 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.

[0026] 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;

[0027] The frame is slidably arranged inside the base, and the screw is threadedly connected inside the frame.

[0028] The screening cylinder includes a screen cylinder 1 fixedly connected to the inside of the cylinder body and a discharge end 1 fixedly connected to one end of the screen cylinder 1; the frame is provided with a bracket for supporting the discharge end 1, and the end of the bracket is provided with a roller attached to one side of the discharge end.

[0029] 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.

[0030] The reflux body comprises a screw conveyor connected to the screening bin and a reflux pipe connected to the discharge port of the screw conveyor; one end of the reflux pipe is connected to the feed port of the crushing body.

[0031] The beneficial effects of the embodiments of the present invention are:

[0032] The material screened by the screening body enters the interior of the reflux body through the screening component. After passing through the screening component, the material first enters the interior of the screening bin. After the material falls on the screen plate, it is screened again by the screen plate, so that the material mixed with the material that meets the particle size requirements is screened out to prevent such material from flowing back to the crushing body, reduce over-grinding, and reduce the reflux of the material, thereby reducing the workload of the crushing body;

[0033] In actual use, the screening efficiency can be improved through the multi-layer screening method of the screening body. At the same time, the material screening is divided into three levels. The user can choose to return only the first-level material / return the first-level material and the second-level material according to the actual situation;

[0034] The first-stage material can be screened again by two sieve plates with different mesh sizes, which can improve the screening efficiency of the first-stage material;

[0035] 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 at this time, 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 materials; if the amount of tertiary material is large, the height of screening cylinder two can be raised through the driving module at this time, 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 materials; the height of screening cylinder two can be adjusted through the driving module according to the actual amount of material, 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural schematic diagram of the present invention;

[0037] Figure 2 It is a cross-sectional schematic diagram of the screening assembly of the present invention;

[0038] Figure 3 It is a structural schematic diagram of the first viewing angle of the screening body of the present invention;

[0039] Figure 4 It is a structural schematic diagram of the second viewing angle of the screening body of the present invention;

[0040] Figure 5 It is a cross-sectional schematic diagram of the sorting component of the present invention;

[0041] Figure 6 for Figure 5 A schematic diagram of the structure enlargement at the center A;

[0042] Figure 7 It is a structural schematic diagram of the baffle of the present invention;

[0043] Figure 8 It is a structural schematic diagram of the cylinder of the present invention.

[0044] In the figure: 1. Base; 2. Sorting assembly; 3. Power assembly; 4. Driving module; 5. Spiral blade; 6. Discharge assembly; 7. Crushing body; 8. Screening body; 9. Reflux body; 10. Screening assembly; 11. Receiving ring 1; 12. Receiving ring 2; 13. Discharging pipe 1; 14. Discharging pipe 2;

[0045] 21. Cylinder body; 22. Screening cylinder 1; 23. Screening cylinder 2;

[0046] 31. Gear ring 2; 32. Motor 3; 33. Gear 2;

[0047] 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;

[0048] 61. notch; 62. discharge portion; 63. guide rail; 64. spring; 65. insert plate;

[0049] 91. Screw conveyor; 92. Reflux pipe;

[0050] 101. screening bin; 102. sieve plate; 103. discharge pipe;

[0051] 221, screen drum one; 222, discharge end one;

[0052] 231. Screen drum two; 232. Discharge end two. DETAILED DESCRIPTION

[0053] 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.

[0054] See also Figures 1 to 8 The embodiment of the present invention discloses a boron carbide crushing device, including:

[0055] A crushing body 7, used for crushing the boron carbide material;

[0056] The screening body 8 is used to screen the crushed boron carbide material, and

[0057] The reflux body 9 is used to return the screened boron carbide material to the crushing body 7;

[0058] A screening assembly 10 for secondary screening of the boron carbide material is provided between the screening body 8 and the reflux body 9;

[0059] The screening assembly 10 includes a screening bin 101 which is connected and arranged on the reflux body 9 and is arranged obliquely, a screening plate 102 which is arranged inside the screening bin 101, and a discharge pipe 103 which is connected and arranged at the bottom of the screening bin 101; a vibration motor can be arranged outside the screening bin 101 to improve the screening effect of the screening plate 102 on the material;

[0060] In actual use, boron carbide materials are added to the crushing body 7 for crushing. After the crushed materials are screened by the screening body 8, the materials whose particle size does not meet the requirements are returned to the crushing body 7 through the reflux body 9 for secondary crushing.

[0061] The material screened by the screening body 8 enters the interior of the reflux body 9 through the screening component 10. After passing through the screening component 10, the material first enters the interior of the screening bin 101. After the material falls on the screen plate 102, the material is screened again by the screen plate 102, so that the material mixed in the material that meets the particle size requirements is screened out, avoiding such material from flowing back into the crushing body 7, reducing over-grinding, and at the same time reducing the reflux amount of the material, thereby reducing the workload of the crushing body 7.

[0062] As a further illustration of this application:

[0063] The screening body 8 includes a base 1, on which a sorting assembly 2 is rotatably arranged, and on which a power assembly 3 for driving the sorting assembly 2 to rotate is arranged. The sorting assembly 2 includes:

[0064] The cylinder 21 is rotatably mounted on the base 1 and driven to rotate by the power assembly 3;

[0065] 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;

[0066] 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;

[0067] In actual use, the crushed materials in the crushing body 7 enter the interior of the screening drum 22 as the crushing body 7 rotates, and as the power assembly 3 drives the cylinder 21 and the screening drum 22 to rotate, the materials in the screening drum 22 are screened by the screening drum 22, and the screened materials and the residual materials of the first-level materials after the first-level screening are screened into the interior of the screening drum 22 and discharged as the screening drum 22 rotates, and the screened materials after the first-level screening fall into the interior of the screening drum 23, and the second-level screening is carried out as the screening drum 23 rotates. The screened materials and the residual materials of the second-level materials after the second-level screening are screened into the interior of the screening drum 23 and discharged as the screening drum 23 rotates, and the screened materials and the third-level materials after the second-level screening fall into the interior of the cylinder 21 and are discharged as the cylinder 21 rotates; that is, the screening of materials is realized by the cylinder 21, the screening drum 22, and the screening drum 23, and the materials are classified into three levels, thereby realizing the classification of materials;

[0068] In actual use, the screening efficiency can be improved through the multi-layer screening method of the screening body 8. At the same time, the material screening is divided into three levels. The user can choose to reflux only the first-level material / reflux the first-level material and the second-level material according to the actual situation.

[0069] As a further illustration of this application:

[0070] One end of the screening cylinder 1 22 is provided with a material receiving ring 11 for receiving materials, and one end of the screening cylinder 2 23 is provided with a material receiving ring 2 12 for receiving materials;

[0071] The bottom of the material receiving ring 11 is connected to a material discharge pipe 13, and the bottom of the material receiving ring 2 12 is connected to a material discharge pipe 2 14;

[0072] Two sieve plates 102 are provided, and the two sieve plates 102 divide the interior of the screening bin 101 into chamber 1, chamber 2 and chamber 3; the mesh numbers of the two boxes of sieve plates 102 are different, the mesh number of one sieve plate 102 is the same as or similar to the mesh number of the screening cylinder 1 22, and the mesh number of the other sieve plate 102 is the same as or similar to the mesh number of the screening cylinder 2 23;

[0073] The feed pipe 1 13 is connected to the chamber 1, the feed pipe 2 14 is connected to the chamber 2, and the discharge pipe 103 is connected to the chamber 3;

[0074] When only the primary material is refluxed, the primary material is discharged from one end of the screening cylinder 22 into the interior of the receiving ring 11, and enters the interior of the chamber 1 through the discharge pipe 13. After the primary material is screened by the two sieve plates 102, the material forms secondary material and tertiary material. The primary material and the secondary material are refluxed to the interior of the crushing body 7 through the reflux body 9 for re-crushing, and the tertiary material in the chamber 3 is discharged through the discharge pipe 103.

[0075] The first-level material is screened again by two screen plates 102 with different mesh sizes, so that the screening efficiency of the first-level material can be improved.

[0076] As a further illustration of this application:

[0077] The base 1 is provided with a driving module 4 for driving the screening drum 23 to rotate and move up and down;

[0078] The undersize after primary screening falls into the interior of the second screening cylinder 23, and the second screening is performed as the driving module 4 drives the second screening cylinder 23 to rotate;

[0079] 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;

[0080] 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.

[0081] As a further illustration of this application:

[0082] 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; wherein the screening drum 23 is rotatably arranged inside the baffle 42;

[0083] 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;

[0084] 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.

[0085] As a further illustration of this application:

[0086] 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 actual conditions, which is convenient for 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 to be equal 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 a large amount of screened material after the primary screening to gather at the same position of the screening drum 23.

[0087] As a further illustration of this application:

[0088] 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;

[0089] 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;

[0090] The second screen cylinder 231 abuts against the inside of the cylinder 21, so that one end of the second screen cylinder 23 abuts against the inside of the cylinder 21, and the other end is rotatably arranged inside the baffle 42, thereby achieving support for the second screen cylinder 23;

[0091] The receiving ring 12 is fixedly connected to the baffle 42 so that the receiving ring 12 is covered outside the discharge end 232 so that the material can smoothly enter the receiving ring 12 no matter where the material is discharged from the discharge end 232.

[0092] As a further illustration of this application:

[0093] 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 is adjusted, and the baffle 42 is elliptical, so that the baffle 42 can still seal the opening of the cylinder 21 after the height is adjusted; the purpose of sealing the cylinder 21 by the baffle 42 is that the particle size of the tertiary material inside the cylinder 21 is relatively small, 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 seal the cylinder 21 to prevent dust from escaping; the sealing ring 1 is provided to seal the connection between the cylinder 21 and the baffle 42, thereby preventing material leakage;

[0094] 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;

[0095] 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.

[0096] 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.

[0097] 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 .

[0098] As a further illustration of this application:

[0099] 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;

[0100] The frame 41 is slidably disposed inside the base 1, and the screw rod 47 is threadedly connected inside the frame 41;

[0101] 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.

[0102] 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.

[0103] As a further illustration of this application:

[0104] 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; the receiving ring 11 is fixedly connected to the bracket 49, so that the receiving ring 11 is covered on the outside of the discharge end 222, so that no matter where the material is discharged from the discharge end 222, the material can smoothly enter the inside of the receiving ring 11;

[0105] 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;

[0106] 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;

[0107] 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.

[0108] As a further illustration of this application:

[0109] 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;

[0110] 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.

[0111] As a further illustration of this application:

[0112] 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;

[0113] 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.

[0114] As a further illustration of this application:

[0115] The reflux body 9 includes a screw conveyor 91 connected to the screening bin 101 and a reflux pipe 92 connected to the discharge port of the screw conveyor 91; one end of the reflux pipe 92 is connected to the feed port of the crushing body 7; the material screened by the screening assembly 10 is lifted to the inside of the reflux pipe 92 through the screw conveyor 91, and then flows back to the inside of the crushing body 7 through the reflux pipe 92 for re-crushing;

[0116] The crushing body 7 can use a hammer crusher, a jaw crusher, etc. Figure 1 The crushing body 7 listed in the figure is a ball mill.

[0117] 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.

[0118] 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.

[0119] 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.

[0120] 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 crushing device, comprising: A crushing body (7), used for crushing the boron carbide material; A screening body (8) is used to screen the crushed boron carbide material, and A reflux body (9) is used to return the screened boron carbide material to the crushing body (7); It is characterized in that A screening component (10) for secondary screening of the boron carbide material is arranged between the screening body (8) and the reflux body (9); The screening assembly (10) comprises a screening bin (101) which is connected and arranged on the reflux body (9) and is arranged obliquely, a screening plate (102) arranged inside the screening bin (101), and a discharge pipe (103) which is connected and arranged at the bottom of the screening bin (101).

2. The boron carbide crushing device according to claim 1, characterized in that: The screening body (8) comprises a base (1), on which a sorting assembly (2) is rotatably arranged, and on which a power assembly (3) for driving the sorting assembly (2) to rotate is arranged, wherein the sorting assembly (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.

3. The boron carbide crushing device according to claim 2, characterized in that: One end of the screening cylinder 1 (22) is provided with a material receiving ring 1 (11) for receiving materials, and one end of the screening cylinder 2 (23) is provided with a material receiving ring 2 (12) for receiving materials; The bottom of the first material receiving ring (11) is connected to a first material discharge pipe (13), and the bottom of the second material receiving ring (12) is connected to a second material discharge pipe (14); Two sieve plates (102) are provided, and the two sieve plates (102) divide the interior of the sieving bin (101) into chamber one, chamber two and chamber three; The feed pipe 1 (13) is connected to the chamber 1, the feed pipe 2 (14) is connected to the chamber 2, and the discharge pipe (103) is connected to the chamber 3.

4. The boron carbide crushing device according to claim 2, characterized in that: The base (1) is provided with a driving module (4) for driving the second screening drum (23) to rotate and move up and down.

5. The boron carbide crushing device according to claim 4, 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 screening drum (23) is rotatably arranged inside the baffle (42).

6. The boron carbide crushing device according to claim 5, 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); a discharge assembly (6) is arranged on the baffle (42), and the discharge assembly (6) comprises a notch (61) opened on the baffle (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) through a spring (64).

7. The boron carbide crushing device according to claim 5, 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).

8. The boron carbide crushing device according to claim 7, characterized in that: The screening drum (22) comprises a screening drum (221) fixedly connected to the inside of the drum body (21) and a discharge end (222) fixedly connected to one end of the screening drum (221); a bracket (49) for supporting the discharge end (222) is provided on the frame body (41), and a roller (410) is provided at the end of the bracket (49) and is attached to the side of the discharge end (222).

9. The boron carbide crushing device according to claim 2, 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 crushing device according to claim 1, characterized in that: The reflux body (9) comprises a screw conveyor (91) connected to the screening bin (101) and a reflux pipe (92) connected to the discharge port of the screw conveyor (91); one end of the reflux pipe (92) is connected to the feed port of the crushing body (7).

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