Boron carbide micro-powder sorting device

Abstract

The utility model provides a boron carbide micro powder sorting device which comprises a sorting box supported on the ground through a fixing frame, a smashing assembly and an auxiliary discharging assembly are arranged in the sorting box, a concave sieve tray is fixedly installed on the inner wall of the sorting box, and the smashing assembly comprises a hollow rotary drum, an end face cam and a sliding rod. The hollow drum is rotationally connected to the lower surface of the top of the sorting box, the end cam is fixedly mounted on the lower surface of the top of the sorting box, and the sliding rod is longitudinally and slidably matched with the inner wall of the hollow drum; through the arrangement of the end face cam, the sliding rod and the grinding rod can rotate along with the hollow rotary drum and can slide up and down along the inner wall of the hollow rotary drum by utilizing the shape characteristic of the end face cam, so that the distance between the grinding rod and the concave sieve tray is continuously changed; therefore, on one hand, grinding can be carried out while agglomerated boron carbide micro powder can be scattered, and on the other hand, arrangement of a power source and wiring harnesses is reduced, and the structure of the device is optimized.

Description

Technical Field

[0001] The utility model relates to the technical field of boron carbide sorting, in particular to a boron carbide powder sorting device. Background Art

[0002] In the production process of boron carbide powder, sorting is an important link. The main purpose is to classify boron carbide powder into different grades according to its particle size, shape, density and other characteristics to meet the needs of different application fields. The sorting methods include screening, air flow sorting, electrostatic sorting and so on.

[0003] After searching, the Chinese patent publication number CN210386171U discloses a boron carbide powder sorting device, including a cylindrical sorting device, a grinding device and a filtering device are arranged inside the sorting device, an annular feed port is arranged on the top of the sorting device, a driving cavity of the grinding device is arranged in the middle of the feed port, and connecting plates connected to the inner wall of the sorting device are evenly distributed on the periphery of the driving cavity. A driving motor capable of lifting up and down is arranged in the driving cavity, and the output shaft of the driving motor extends vertically downward and passes through the bottom of the driving cavity into the sorting device, and the grinding device is arranged at the end of the output shaft extending into the sorting device; the grinding device is arranged at the upper end of the upper filtering mechanism, and a vibration motor is arranged at the lower part of the lower filtering mechanism, and the lower end of the sorting device is connected to the base through an elastic member.

[0004] The above patent has the following shortcomings: it uses a motor to drive the output shaft to drive the grinding rod and the grinding disc to rotate, and uses the contact and cooperation between the grinding disc and the filter screen to grind powders with larger particle sizes. However, boron carbide micropowder is easily affected by moisture during storage, resulting in coagulation and agglomeration between the powder particles. Although the device can use a telescopic mechanism to adjust the distance between the grinding disc and the filter screen so that the micropowder can be located between the grinding disc and the filter screen, it requires multiple power sources to cooperate simultaneously to complete it, so it has certain limitations.

[0005] Therefore, a boron carbide powder sorting device is proposed. Utility Model Content

[0006] In view of this, the embodiments of the present invention hope to provide a boron carbide powder sorting device to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial option.

[0007] The technical solution of the embodiment of the utility model is implemented as follows: a boron carbide powder sorting device includes a sorting box supported on the ground by a fixed frame, a crushing assembly and an auxiliary unloading assembly are arranged inside the sorting box, and a concave sieve plate is fixedly installed on the inner wall of the sorting box, the crushing assembly includes a hollow drum, an end cam and a slide rod, the hollow drum is rotatably connected to the lower surface of the top of the sorting box, the end cam is fixedly installed on the lower surface of the top of the sorting box, the slide rod can only be longitudinally slidably matched with the inner wall of the hollow drum, one end of the slide rod is rollingly matched with the bottom of the end cam through a ball, and the other end of the slide rod is fixedly connected with a grinding rod.

[0008] In some embodiments, the outer wall of one end of the sliding rod close to the ball is fixedly connected to a limit ring, and a spring is buckled on the opposite side of the limit ring and the hollow drum.

[0009] In some embodiments, the top upper surface of the sorting box is fixedly connected to a motor via bolts, the motor output shaft is fixedly connected to a rotating shaft via a coupling, and the other end of the rotating shaft is fixedly connected to the inner wall of the hollow drum.

[0010] In some embodiments, a screening plate is obliquely installed on the inner wall of the sorting box located at the bottom of the concave sieve plate, and the upper surface of the bottom of the sorting box is also arranged obliquely.

[0011] In some embodiments, the sieve plate and the lowest point of the upper surface of the bottom of the sorting box are both provided with a discharge port for discharging materials.

[0012] In some embodiments, one side of the top of the sorting box is fixedly connected to and communicated with a feed hopper, and an inner wall of the sorting box located at the bottom of the feed hopper is fixedly connected to an inclined material guide plate.

[0013] In some embodiments, the auxiliary unloading assembly includes a connecting rod and a scraper.

[0014] In some embodiments, the connecting rod is fixedly connected to the bottom of the rotating shaft through a coupling, a mounting frame is welded to the other end of the connecting rod, and the scraper is fixedly connected to the inner wall of the mounting frame by bolts.

[0015] The embodiment of the utility model has the following advantages due to the adoption of the above technical solution:

[0016] 1. A boron carbide powder sorting device, by setting an end cam and utilizing the shape characteristics of the end cam itself, allows a slide bar and a grinding rod to rotate with a hollow drum and slide up and down along the inner wall of the hollow drum, thereby continuously changing the distance between the grinding rod and the concave sieve plate, so that on the one hand, grinding can be performed while breaking up agglomerated boron carbide powders, and on the other hand, the arrangement of power sources and wiring harnesses is reduced, thereby optimizing the device structure.

[0017] 2. A boron carbide powder sorting device, by setting a scraper, the scraper is used to contact and cooperate with the top of the concave sieve plate to scrape off the powder attached to the inner wall of the concave sieve plate and accelerate the discharge of the powder, avoiding the accumulation of powder and causing difficulties in discharge, thereby affecting the sorting efficiency.

[0018] 3. A boron carbide powder sorting device, which arranges the guide plate, the screening plate and the upper surface of the top of the sorting box at an angle, thereby providing guidance for the boron carbide powder during feeding and discharging, facilitating rapid feeding and discharging, and further improving the sorting efficiency.

[0019] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is the main structural diagram of the utility model;

[0022] Figure 2 This is a schematic diagram of the internal structure of the sorting box of the utility model;

[0023] Figure 3 It is a schematic diagram of the connection between the crushing component and the auxiliary feeding component of the utility model.

[0024] Reference numerals:

[0025] 1. Sorting box; 2. Fixed frame; 3. Crushing assembly; 4. Auxiliary unloading assembly; 5. Concave sieve plate; 6. Screening plate; 7. Feed hopper; 8. Guide plate; 9. Discharge port; 10. Motor; 11. Hollow drum; 12. End cam; 13. Connecting rod; 14. Mounting frame; 15. Scraper; 16. Rotating shaft; 17. Ball; 18. Limiting ring; 19. Spring; 20. Sliding rod; 21. Grinding rod. DETAILED DESCRIPTION

[0026] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0027] In the present utility model, unless otherwise clearly stipulated and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0028] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0029] Embodiment 1:

[0030] like Figure 1-3 As shown, a boron carbide powder sorting device includes a sorting box 1 supported on the ground by a fixing frame 2.

[0031] A crushing assembly 3 and an auxiliary unloading assembly 4 are arranged inside the sorting box 1, and a concave sieve plate 5 is fixedly installed on the inner wall of the sorting box 1. The crushing assembly 3 includes a hollow drum 11, an end cam 12 and a slide bar 20. The hollow drum 11 is rotatably connected to the lower surface of the top of the sorting box 1, and the end cam 12 is fixedly installed on the lower surface of the top of the sorting box 1. The slide bar 20 can only be longitudinally slidably matched with the inner wall of the hollow drum 11. One end of the slide bar 20 is rollingly matched with the bottom of the end cam 12 through a ball 17, and the other end of the slide bar 20 is fixedly connected with a grinding rod 21.

[0032] The outer wall of one end of the slide rod 20 close to the ball 17 is fixedly connected to a limit ring 18 , and a spring 19 is buckled with the limit ring 18 and the opposite side of the hollow drum 11 .

[0033] The top upper surface of the sorting box 1 is fixedly connected with a motor 10 by bolts, and the output shaft of the motor 10 is fixedly connected with a rotating shaft 16 by a coupling, and the other end of the rotating shaft 16 is fixedly connected to the inner wall of the hollow drum 11.

[0034] The starting motor 10 drives the rotating shaft 16 to drive the hollow rotating drum 11 and the sliding rod 20 to rotate, so that the ball 17 rolls along the end surface of the end cam 12. When the ball 17 moves from the lower position to the higher position of the end cam 12, the spring 19 uses its own elasticity to drive the sliding rod 20 and the grinding rod 21 to gradually rise, so that the distance between the grinding rod 21 and the concave sieve plate 5 becomes larger, thereby allowing the agglomerated boron carbide micropowder to pass through; when the ball 17 moves from the higher position to the lower position of the end cam 12, the sliding rod 20 drives the grinding rod 21 to gradually descend, so that the grinding rod 21 contacts the inner wall of the concave sieve plate 5, and the spring 19 is elastically deformed under the force, thereby utilizing the interaction force between the grinding rod 21 and the concave sieve plate 5 to break up the agglomerated boron carbide micropowder.

[0035] The device is provided with an end cam 12 and utilizes the shape characteristics of the end cam 12 itself, so that the slide rod 20 and the grinding rod 21 can rotate with the hollow drum 11 and slide up and down along the inner wall of the hollow drum 11, thereby continuously changing the distance between the grinding rod 21 and the concave sieve plate 5, so that on the one hand, grinding can be carried out while breaking up the agglomerated boron carbide micropowder, and on the other hand, the layout of the power source and the wiring harness is reduced, thereby optimizing the device structure.

[0036] like Figure 2 As shown, the inner wall of the sorting box 1 at the bottom of the concave sieve plate 5 is obliquely installed with a sieve plate 6, and the bottom upper surface of the sorting box 1 is also arranged obliquely, and the lowest points of the sieve plate 6 and the bottom upper surface of the sorting box 1 are provided with a discharge port 9 for discharging materials.

[0037] One side of the top of the sorting box 1 is fixedly connected to and communicated with a feed hopper 7, and an inner wall of the sorting box 1 located at the bottom of the feed hopper 7 is fixedly connected to an inclined material guide plate 8.

[0038] Boron carbide powder is poured into the sorting box 1 through the feed hopper 7, and then the powder slides along the guide plate 8 to the top of the concave sieve plate 5 for crushing and filtration. The powder filtered by the concave sieve plate 5 falls to the top of the sieve plate 6, and the powder passing through the sieve plate 6 falls to the upper surface of the top of the sorting box 1. The sorted powder is discharged from the sorting box 1 through two discharge ports 9.

[0039] The device arranges the guide plate 8, the screening plate 6 and the top upper surface of the sorting box 1 at an angle, thereby providing guidance for the boron carbide powder during feeding and discharging, facilitating rapid feeding and discharging and improving sorting efficiency.

[0040] Embodiment 2:

[0041] A boron carbide powder separation device, this embodiment makes the following improvements on the basis of embodiment 1, such as Figure 2 and Figure 3 As shown:

[0042] The auxiliary unloading assembly 4 includes a connecting rod 13 and a scraper 15. The connecting rod 13 is fixedly connected to the bottom of the rotating shaft 16 through a coupling. A mounting frame 14 is welded to the other end of the connecting rod 13, and the scraper 15 is fixedly connected to the inner wall of the mounting frame 14 by bolts.

[0043] The rotating shaft 16 is used to drive the connecting rod 13, the mounting frame 14 and the scraper 15 to rotate, so as to scrape off the fine powder attached to the top of the concave sieve plate 5 and accelerate the discharge of the fine powder.

[0044] The device is provided with a scraper 15, which contacts and cooperates with the top of the concave sieve plate 5 to scrape off the powder attached to the inner wall of the concave sieve plate 5 and accelerate the discharge of the powder, thereby avoiding the accumulation of powder and causing the discharge difficulty, thereby affecting the sorting efficiency.

[0045] Working principle: When the device is in use, first pour the boron carbide powder to be sorted into the sorting box 1 through the feed hopper 7, then the powder slides to the top of the concave sieve plate 5 under the guidance of the guide plate 8, and then the motor 10 is started to drive the rotating shaft 16 to drive the hollow drum 11, the connecting rod 13 and the slide bar 20 to rotate along the axis of the rotating shaft 16 as the rotation center, and the slide bar 20 drives the ball 17 to roll along the bottom of the end cam 12. When the ball 17 moves from the lower end of the end cam 12 to the higher end, the spring 19 gradually rebounds, thereby driving the slide bar 20 and the grinding rod 21 to gradually rise. At this time, the distance between the grinding rod 21 and the concave sieve plate 5 is large, so that the agglomerated The agglomerated micro-powder is broken up, and when the ball 17 moves from the high position to the low position of the end face cam 12, the spring 19 is gradually compressed, causing the slide bar 20 and the grinding rod 21 to gradually descend. At this time, the distance between the grinding rod 21 and the concave sieve plate 5 is reduced, and the micro-powder can be ground; at the same time, the scraper 15, driven by the mounting frame 14 and the connecting rod 13, scrapes off the micro-powder attached to the inner wall of the concave sieve plate 5, and accelerates the discharge speed of the micro-powder after loose grinding to avoid accumulation. Then, the micro-powder screened by the concave sieve plate 5 will first fall to the top of the sieve plate 6, and then be further sorted by the sieve plate 6. Finally, the sorted micro-powder is discharged from the sorting box 1 through the discharge port 9.

[0046] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A boron carbide powder sorting device, comprising a sorting box (1) supported on the ground by a fixed frame (2), characterized in that: The sorting box (1) is provided with a crushing assembly (3) and an auxiliary feeding assembly (4) inside, and a concave sieve plate (5) is fixedly installed on the inner wall of the sorting box (1). The crushing assembly (3) comprises a hollow drum (11), an end cam (12) and a slide bar (20). The hollow drum (11) is rotatably connected to the lower surface of the top of the sorting box (1), the end cam (12) is fixedly installed on the lower surface of the top of the sorting box (1), and the slide bar (20) can only be longitudinally slidably matched with the inner wall of the hollow drum (11). One end of the slide bar (20) is rollingly matched with the bottom of the end cam (12) through a ball (17), and the other end of the slide bar (20) is fixedly connected with a grinding rod (21).

2. A boron carbide powder sorting device according to claim 1, characterized in that: The outer wall of one end of the sliding rod (20) close to the ball (17) is fixedly connected to a limiting ring (18), and a spring (19) is buckled on the opposite side of the limiting ring (18) and the hollow rotating cylinder (11).

3. A boron carbide powder sorting device according to claim 2, characterized in that: The top surface of the sorting box (1) is fixedly connected to a motor (10) via bolts, the output shaft of the motor (10) is fixedly connected to a rotating shaft (16) via a coupling, and the other end of the rotating shaft (16) is fixedly connected to the inner wall of the hollow rotating drum (11).

4. The boron carbide powder separation device according to claim 1, characterized in that: The inner wall of the sorting box (1) at the bottom of the concave sieve plate (5) is obliquely mounted with a sieve plate (6), and the upper surface of the bottom of the sorting box (1) is also arranged obliquely.

5. A boron carbide powder sorting device according to claim 4, characterized in that: The screening plate (6) and the separation box (1) are both provided with a discharge port (9) at the lowest point of the bottom upper surface for discharging materials.

6. The boron carbide powder separation device according to claim 1, characterized in that: One side of the top of the sorting box (1) is fixedly connected to and communicated with a feed hopper (7), and an inner wall of the sorting box (1) located at the bottom of the feed hopper (7) is fixedly connected to an inclined material guide plate (8).

7. The boron carbide powder separation device according to claim 1, characterized in that: The auxiliary unloading assembly (4) comprises a connecting rod (13) and a scraper (15).

8. The boron carbide powder separation device according to claim 7, characterized in that: The connecting rod (13) is fixedly connected to the bottom of the rotating shaft (16) via a coupling, a mounting frame (14) is welded to the other end of the connecting rod (13), and the scraper (15) is fixedly connected to the inner wall of the mounting frame (14) via bolts.

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