Airflow grading device for boron carbide powder processing

Abstract

The utility model discloses an airflow grading device for boron carbide powder processing, which relates to the technical field of boron carbide powder processing and comprises a shell, a feeding pipe is fixedly connected to the top of the inner wall of the shell, an air outlet pipe is fixedly connected to the top of the inner wall of the shell, and a winnowing mechanism is arranged in an inner cavity of the shell. And a collecting mechanism is arranged on the outer surface of the shell. According to the airflow classification device for boron carbide powder processing, through reverse rotation of the winnowing mechanism, the separation impeller and the rotating rod, airflow can effectively sort boron carbide powder, the airflow drives the powder to be subjected to airflow classification along with rotation of the rotating rod, large particles fall down under the action of centrifugal force, and therefore the boron carbide powder can be effectively sorted. By means of the mode, the particle size can be accurately controlled, powder loss is reduced, impurities are removed, the powder quality and the processing efficiency are improved, meanwhile, damage to the powder caused by mechanical contact is avoided, and the service life of equipment is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of boron carbide powder processing technology, and in particular to an airflow classification device for boron carbide powder processing. Background Technology

[0002] Boron carbide, also known as black diamond, is an inorganic compound with the chemical formula B4C, typically appearing as a grayish-black powder. It is one of the three hardest known materials (after diamond and cubic boron nitride), and is used in tank armor, bulletproof vests, and many industrial applications.

[0003] The existing forging press for processing boron carbide powder mainly includes a shell, a feed pipe, and an exhaust pipe. During use, boron carbide powder is fed into the shell through the feed pipe, and air classification is performed in the shell. However, in actual use, it is not possible to make the air classifier rotate in the opposite direction to the separator impeller, and it is not possible to blow the air classifier directly onto the centrifugally dispersed boron carbide powder. This is not conducive to the rapid dispersion of boron carbide powder particles, which reduces the quality of the powder and the processing efficiency.

[0004] Therefore, an airflow classification device for boron carbide powder processing is proposed to address the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, such as the inability to reverse the rotation of the air classifier and the separation impeller, and the inability to directly blow the air classifier onto the centrifugally dispersed boron carbide powder, which hinders the rapid dispersion of boron carbide powder particles and reduces powder quality and processing efficiency, an airflow classification device for boron carbide powder processing is proposed.

[0006] The technical solution adopted by this utility model to solve its technical problem is: an airflow classification device for boron carbide powder processing, including a shell, a feed pipe fixedly connected to the top of the inner wall of the shell, an air outlet pipe fixedly connected to the top of the inner wall of the shell, an air separation mechanism provided in the inner cavity of the shell, and a collection mechanism provided on the outer surface of the shell. The air separation mechanism includes a hollow block fixedly connected to the inner wall of the shell, a transmission rod rotatably connected to one side of the outer surface of the shell extending through and to the inner surface of the hollow block, a motor fixedly connected to one side of the outer surface of the shell, and the output end of the motor fixedly connected to one end of the transmission rod via a coupling. A rotating rod is rotatably connected to the inner surface of the hollow block. Gear 1 is fixedly connected to the outer surface of the transmission rod, and gear 2 is fixedly connected to the outer surface of the rotating rod. A cylinder rotatably connected to the rotating rod is rotatably connected to the inner surface of the hollow block. Gear 3 is fixedly connected to the bottom end of the cylinder. Gear 1 meshes with gear 2 and gear 3. A separating impeller is fixedly connected to the top end of the cylinder. A ring rotatably connected to the rotating rod is fixedly connected to the lower end of the hollow block. An air inlet pipe is fixedly connected to the inner wall of the ring, extending to one side of the outer surface of the outer shell. The inner surface of the air inlet pipe is connected to the inner surface of the rotating rod.

[0007] Preferably, a material distribution plate is fixedly connected to the top end of the rotating rod, and the cross-section of the material distribution plate is conical.

[0008] Preferably, a plurality of partitions are fixedly connected to the outer surface of the dispensing tray, and the plurality of partitions are distributed in a ring at equal intervals.

[0009] Preferably, a plurality of one-way valves are fixedly connected to the inner surface of the rotating rod, and the plurality of one-way valves are distributed in a ring at equal intervals.

[0010] Preferably, an air outlet ring is fixedly connected to the inner wall of the outer casing, and a plurality of scrapers that are in close contact with the inner wall of the outer casing are fixedly connected to the outer surface of the rotating rod.

[0011] Preferably, the collecting mechanism includes a groove block fixedly connected to one side of the outer surface of the housing, a locking block inserted into the inner wall of the groove block, and a collecting frame fixedly connected to one side of the locking block.

[0012] Preferably, a limiting frame is fixedly connected to the inner wall of the collection frame, and a filter screen is movably installed on the inner wall of the collection frame.

[0013] Preferably, each of the four corners of the bottom of the collection frame is fixedly connected with a caster wheel, and a handle is fixedly connected to one side of the outer surface of the collection frame.

[0014] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0015] 1. This utility model provides an airflow classification device for boron carbide powder processing. Through the air classification mechanism, the opposing rotations of the separator impeller and the rotating rod enable the airflow to effectively classify the boron carbide powder. The airflow, along with the rotation of the rotating rod, drives the powder to undergo airflow classification. Large particles fall under the action of centrifugal force, while fine particles are carried away by the airflow, ensuring uniform particle distribution. This method can precisely control particle size, reduce powder loss, remove impurities, improve powder quality and processing efficiency, while avoiding mechanical contact damage to the powder and extending the service life of the equipment.

[0016] 2. This utility model provides an airflow classification device for boron carbide powder processing. Through a collection mechanism, the boron carbide powder is filtered again under the action of a filter screen. Larger boron carbide powder particles are retained on the filter screen, while smaller particles fall into the inner cavity of the collection frame. This effectively removes larger powder particles, ensuring that the smaller powder particles are finer and meet the requirements. This filtration process helps to improve the purity and quality of the powder, avoids large particle residue, improves the uniformity and precision of the final product, and enhances the sorting effect of the entire airflow classification system, ensuring the high quality and consistency of the final powder. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the overall cross-sectional structure of this utility model;

[0019] Figure 3 This is a cross-sectional structural diagram of the air separation mechanism of this utility model;

[0020] Figure 4 This is a schematic diagram of the cross-sectional structure of the rotating rod of this utility model;

[0021] Figure 5 This is a schematic diagram of the cross-sectional structure of the air outlet ring of this utility model;

[0022] Figure 6 This is a cross-sectional structural diagram of the dust reduction mechanism of this utility model.

[0023] In the diagram: 1. Outer shell; 2. Feed pipe; 3. Air outlet pipe; 4. Air separation mechanism; 41. Hollow block; 42. Rotating rod; 43. Motor; 44. Transmission rod; 45. Gear 1; 46. Gear 2; 47. Gear 3; 48. Cylinder; 49. Separating impeller; 410. Ring; 411. Air inlet pipe; 412. Distributor plate; 413. Baffle plate; 414. One-way valve; 415. Scraper; 416. Air outlet ring; 5. Collection mechanism; 51. Groove block; 52. Locking block; 53. Collection frame; 54. Caster wheel; 55. Handle; 56. Limiting frame; 57. Filter screen. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Specific implementation examples are given below.

[0026] Please see Figure 1 - Figure 6An air classifier for boron carbide powder processing includes a housing 1. A feed pipe 2 is fixedly connected to the top of the inner wall of the housing 1, and an air outlet pipe 3 is fixedly connected to the top of the inner wall of the housing 1. An air classifier 4 is disposed within the inner cavity of the housing 1, and a collection mechanism 5 is disposed on the outer surface of the housing 1. The air classifier 4 includes a hollow block 41 fixedly connected to the inner wall of the housing 1. A transmission rod 44 is rotatably connected to one side of the outer surface of the housing 1, extending through and extending to the inner surface of the hollow block 41. A motor 43 is fixedly connected to one side of the outer surface of the housing 1. The output end of the motor 43 is fixedly connected to one end of the transmission rod 44 via a coupling. A rotating rod 42 is rotatably connected to the inner surface of the hollow block 41, and a gear 4 is fixedly connected to the outer surface of the transmission rod 44. 5. Gear 2 46 is fixedly connected to the outer surface of the rotating rod 42. A cylinder 48, which is rotatably connected to the rotating rod 42, is rotatably connected to the inner surface of the hollow block 41. Gear 3 47 is fixedly connected to the bottom end of the cylinder 48. Gear 1 45 meshes with gear 2 46 and gear 3 47. A separating impeller 49 is fixedly connected to the top end of the cylinder 48. A ring 410, which is rotatably connected to the rotating rod 42, is fixedly connected to the lower end of the hollow block 41. An air inlet pipe 411 is fixedly connected to the inner wall of the ring 410, extending through and to one side of the outer surface of the outer shell 1. The inner surface of the air inlet pipe 411 is connected to the inner surface of the rotating rod 42. Several one-way valves 414 are fixedly connected to the inner surface of the rotating rod 42. The valves 414 are arranged in a ring at equal intervals. When airflow classification of boron carbide powder is required, the output end of the starter motor 43 drives the transmission rod 44 to rotate via a coupling, which in turn drives gear 45 to rotate. Under the action of meshing connection, gears 46 and 47 rotate in opposite directions, which in turn drives the rotating rod 42 and the separating impeller 49 to rotate in opposite directions. At this time, an external air pump is connected to the air inlet pipe 411, so that air can enter the inner cavity of the rotating rod 42 through the air inlet pipe 411 and the ring 410, and then blow out through the one-way valve 414. At this time, boron carbide powder is directly put into the outer shell 1 through the feed pipe 2. Due to the rotation of the separating impeller 49 and the opposite direction of the rotating rod 42, the boron carbide powder is directly put into the outer shell 1. The rotation of the rotating rod 42 allows the airflow to separate the boron carbide powder. Large particles fall under the centrifugal force of the separating impeller 49, while impurities in the boron carbide powder are discharged into the inner cavity of the outer casing 1 through the air outlet pipe 3. The counter-rotation of the separating impeller 49 and the rotating rod 42 enables the airflow to effectively separate the boron carbide powder. The airflow, along with the rotation of the rotating rod 42, drives the powder to undergo airflow classification. Large particles fall under the centrifugal force, while fine particles are carried away by the airflow, ensuring uniform particle distribution. This method can precisely control particle size, reduce powder loss, remove impurities, improve powder quality and processing efficiency, while avoiding mechanical contact damage to the powder and extending the service life of the equipment.

[0027] The separation impeller 49 mentioned above is a mature existing separation technology and equipment, and its internal structure, principle and connection method will not be described in this solution.

[0028] The one-way valve 414 mentioned above is a mature control technology and device in the prior art. In this solution, it is used to control the flow direction of gas. Its internal structure, principle and connection method will not be described further.

[0029] like Figure 4 As shown, a distribution plate 412 is fixedly connected to the top of the rotating rod 42. The cross-section of the distribution plate 412 is conical, and several partitions 413 are fixedly connected to the outer surface of the distribution plate 412. The partitions 413 are distributed in a ring at equal intervals. During the process of boron carbide powder being fed through the feed pipe 2, the rotation of the rotating rod 42 will drive the distribution plate 412 to rotate, so that the partitions 413 can evenly distribute the falling boron carbide powder, making the boron carbide powder falling into the inner cavity of the separator impeller 49 more uniform. This helps to improve the efficiency and accuracy of airflow classification, making the powder sorting more uniform, avoiding local accumulation or uneven distribution, effectively improving the classification effect, and ensuring the quality and consistency of the final product.

[0030] like Figure 3 and Figure 5 As shown, an air outlet ring 416 is fixedly connected to the inner wall of the outer casing 1, and several scrapers 415 that are in close contact with the inner wall of the outer casing 1 are fixedly connected to the outer surface of the rotating rod 42. By setting the air outlet ring 416, the air containing impurities from the one-way valve 414 can move upward through the air outlet ring 416 after sorting and be discharged through the air outlet pipe 3. At the same time, the boron carbide powder falling on the inner wall of the outer casing 1 is scraped by the scrapers 415 as the rotating rod 42 rotates, which prevents the boron carbide powder from being retained on the inner wall of the outer casing 1 and makes full use of the boron carbide powder.

[0031] like Figure 6As shown, the collection mechanism 5 includes a groove block 51 fixedly connected to one side of the outer surface of the outer shell 1. A locking block 52 is inserted into the inner wall of the groove block 51. A collection frame 53 is fixedly connected to one side of the locking block 52. A limiting frame 56 is fixedly connected to the inner wall of the collection frame 53. A filter screen 57 is movably installed on the inner wall of the collection frame 53. The sorted boron carbide powder will fall into the collection frame 53 through the outer shell 1 under the action of gravity. Under the action of the filter screen 57, the boron carbide powder will be filtered again for classification. Larger particles of boron carbide powder will remain on the filter screen 57, while smaller particles will fall into the inner cavity of the collection frame 53. This can effectively remove larger particles of powder, ensuring that smaller particles of powder are finer and meet the requirements. This filtration process helps to improve the purity and quality of the powder, avoid large particle residue, improve the uniformity and precision of the final product, and enhance the sorting effect of the entire airflow classification system, ensuring the high quality and consistency of the final powder.

[0032] like Figure 6 As shown, casters 54 are fixedly connected to the four corners of the bottom of the collection box 53, and a handle 55 is fixedly connected to one side of the outer surface of the collection box 53. By setting the casters 54 and the handle 55, it is convenient to move the collection box 53.

[0033] The working principle of this utility model is as follows: When it is necessary to perform airflow classification on boron carbide powder, the output end of the starter motor 43 drives the transmission rod 44 to rotate through the coupling, which in turn drives the gear 1 45 to rotate. Under the action of meshing connection, the gear 2 46 and the gear 3 47 rotate in opposite directions, which in turn drives the rotating rod 42 and the separating impeller 49 to rotate in opposite directions. At this time, an external air pump is connected to the air inlet pipe 411, so that air can enter the inner cavity of the rotating rod 42 through the air inlet pipe 411 and the ring 410, and then blow out through the one-way valve 414. At this time, boron carbide powder is directly put into the outer shell 1 through the feed pipe 2. With the rotation of the separating impeller 49 and the counter-rotation of the rotating rod 42, the air can perform airflow classification on the boron carbide powder as the rotating rod 42 rotates. Large particles will fall under the centrifugal force of the separating impeller 49, and impurities in the boron carbide powder will be discharged into the inner cavity of the outer shell 1 through the air outlet pipe 3. During the feeding process of feed pipe 2, the rotation of rotating rod 42 will drive the distribution plate 412 to rotate, so that the baffle 413 can evenly distribute the falling boron carbide powder, making the boron carbide powder falling into the inner cavity of the separator impeller 49 more uniform. The air containing impurities can move upward through the air outlet ring 416 and be discharged through the air outlet pipe 3. At the same time, the boron carbide powder falling on the inner wall of the outer shell 1 is scraped by the scraper 415 as it rotates with rotating rod 42, preventing boron carbide powder from being retained on the inner wall of the outer shell 1 and making full use of boron carbide powder. The sorted boron carbide powder will fall into the collection frame 53 under the action of gravity through the outer shell 1, and under the action of filter screen 57, the boron carbide powder will be filtered again for classification. Larger particles of boron carbide powder will remain on filter screen 57, while smaller particles will fall into the inner cavity of collection frame 53, which can effectively remove larger particles of powder and ensure that smaller particles of powder are finer and meet the requirements.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An airflow classification device for boron carbide powder processing, comprising a housing (1), characterized in that: A feed pipe (2) is fixedly connected to the top of the inner wall of the outer shell (1), and an air outlet pipe (3) is fixedly connected to the top of the inner wall of the outer shell (1). An air separation mechanism (4) is provided in the inner cavity of the outer shell (1), and a collection mechanism (5) is provided on the outer surface of the outer shell (1). The air separation mechanism (4) includes a hollow block (41) fixedly connected to the inner wall of the outer shell (1). A transmission rod (44) is rotatably connected to one side of the outer surface of the outer shell (1) and extends through and to the inner surface of the hollow block (41). A motor (43) is fixedly connected to one side of the outer surface of the outer shell (1). The output end of the motor (43) is fixedly connected to one end of the transmission rod (44) through a coupling. A rotating rod (42) is rotatably connected to the inner surface of the hollow block (41), and a gear is fixedly connected to the outer surface of the transmission rod (44). (45) Gear 2 (46) is fixedly connected to the outer surface of the rotating rod (42). A cylinder (48) rotatably connected to the inner surface of the hollow block (41) is rotatably connected to the rotating rod (42). Gear 3 (47) is fixedly connected to the bottom end of the cylinder (48). Gear 1 (45) meshes with gear 2 (46). Gear 1 (45) meshes with gear 3 (47). A separating impeller (49) is fixedly connected to the top end of the cylinder (48). A ring (410) rotatably connected to the rotating rod (42) is fixedly connected to the lower end of the hollow block (41). An air inlet pipe (411) is fixedly connected to the inner wall of the ring (410) through and extending to one side of the outer surface of the outer shell (1). The inner surface of the air inlet pipe (411) is connected to the inner surface of the rotating rod (42).

2. The airflow classification device for boron carbide powder processing according to claim 1, characterized in that: The top end of the rotating rod (42) is fixedly connected to a material distribution plate (412), and the cross-section of the material distribution plate (412) is conical.

3. The airflow classification device for boron carbide powder processing according to claim 2, characterized in that: The outer surface of the material distribution plate (412) is fixedly connected with several partitions (413), and the partitions (413) are distributed in a ring at equal intervals.

4. The airflow classification device for boron carbide powder processing according to claim 1, characterized in that: A number of one-way valves (414) are fixedly connected to the inner surface of the rotating rod (42), and the one-way valves (414) are distributed in a ring at equal intervals.

5. The airflow classification device for boron carbide powder processing according to claim 1, characterized in that: An air outlet ring (416) is fixedly connected to the inner wall of the outer shell (1), and several scrapers (415) that are in close contact with the inner wall of the outer shell (1) are fixedly connected to the outer surface of the rotating rod (42).

6. The airflow classification device for boron carbide powder processing according to claim 1, characterized in that: The collecting mechanism (5) includes a groove block (51) fixedly connected to one side of the outer surface of the outer shell (1), a card block (52) is inserted into the inner wall of the groove block (51), and a collecting frame (53) is fixedly connected to one side of the card block (52).

7. The airflow classification device for boron carbide powder processing according to claim 6, characterized in that: The inner wall of the collection frame (53) is fixedly connected to a limiting frame (56), and a filter screen (57) is movably installed on the inner wall of the collection frame (53).

8. The airflow classification device for boron carbide powder processing according to claim 6, characterized in that: The four corners of the bottom of the collection frame (53) are all fixedly connected with casters (54), and a handle (55) is fixedly connected to one side of the outer surface of the collection frame (53).

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