Metal powder rotary drying device

Abstract

The application discloses a metal powder rotary drying device, which comprises a drying box, a threaded outlet cover is threadedly connected to the bottom of the drying box, a top cover is fixedly connected to the top of the drying box, a motor is fixedly connected to the top of the top cover, a rotating shaft is fixedly connected to the output end of the motor, and a drying stirring mechanism is arranged in the drying box, and relates to the technical field of metal powder, wherein the drying stirring mechanism is arranged, when the roller is thrown out, the roller rotates to stick out the powder residues on the inner wall of the long sliding groove, and the powder residues are thrown off along with the rotation of the roller, so that the inside of the long sliding groove is cleaned, the sliding of the scraping sleeve is smooth and efficient, the friction during sliding is reduced, the wiping and cleaning effect of the scraping sleeve on the outer wall of the stirring blade is improved, and when the stirring blade stirs the metal powder in the drying box, the metal powder is not accumulated due to adhesion, so that the problem of half the result of twice the effort of the drying effect is avoided.

Description

Technical Field

[0001] This invention relates to the field of metal powder technology, specifically to a metal powder rotary drying device. Background Technology

[0002] Metal powder refers to a group of metal particles with a size of less than 1 mm. It includes single metal powders, alloy powders, and powders of certain refractory compounds with metallic properties. It is the main raw material for powder metallurgy. Metallic elements are generally silvery-white, but when metals are under certain conditions, they become black powders. Most metal powders are black.

[0003] When drying metal powder, it needs to be stirred. However, currently, when stirring metal powder, it is very easy for the metal powder to adhere to the stirring rod before it is completely dried. This causes the powder to stick together and accumulate due to moisture, resulting in a buildup of damp metal powder and making it difficult to achieve the desired drying effect. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a rotary drying device for metal powder, thereby solving the aforementioned problems.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a rotary drying device for metal powder, comprising a drying chamber, a threaded outlet cover threadedly connected to the bottom of the drying chamber, a top cover fixedly connected to the top of the drying chamber, a motor fixedly connected to the top of the top cover, a rotating shaft fixedly connected to the output end of the motor, and a drying agitation mechanism provided inside the drying chamber, the drying agitation mechanism comprising:

[0006] The stirring blade is a long, flat structure. A long groove is provided on the inner wall of the stirring blade. A scraper sleeve is slidably connected to the inner wall of the long groove. The stirring blade is used to stir the metal powder to achieve the function of mixing and drying.

[0007] The roller is a hollow ring mechanism. The outer wall of the roller contacts the inner wall of the long sliding groove. A semi-circular bearing sleeve is rotatably connected to the outer wall of the roller. The outer wall of the semi-circular bearing sleeve is fixedly connected to the outer wall of the scraper sleeve. The roller is used to rotate and roll on the inner wall of the long sliding groove.

[0008] Preferably, a threaded rod is fixedly connected to the inner wall of the roller, a fixed sleeve is fixedly connected to the outer wall of the threaded rod, and a toggle plate is fixedly connected to the outer wall of the fixed sleeve, so that the metal powder is vertically stirred and mixed by rotating the toggle plate.

[0009] Preferably, a fixing block is fixedly connected to the outer wall of the semi-circular bearing sleeve, an elastic rope is fixedly connected to the outer wall of the fixing block, a lifting ring is fixedly connected to one end of the elastic rope, a fixed magnetic ring is rotatably connected to the bottom of the lifting ring, the inner wall of the fixed magnetic ring is rotatably connected to the outer wall of the rotating shaft, and a peeling mechanism is provided inside the drying oven.

[0010] Preferably, the peeling mechanism includes a semi-circular internal threaded sleeve, the outer wall of the threaded rod is threadedly connected to the inner wall of the semi-circular internal threaded sleeve, a connecting plate is fixedly connected to the outer wall of the semi-circular internal threaded sleeve, a scraper A is fixedly connected to the outer wall of the connecting plate, the inner wall of the scraper A is slidably connected to the outer wall of the scraper sleeve, a sliding strip is slidably connected to the inner wall of the connecting plate, and the outer wall of the sliding strip is fixedly connected to the outer wall of the scraper sleeve.

[0011] Preferably, a scraper B is fixedly connected to the outer wall of the connecting plate, a connecting ring is fixedly connected to the outer wall of the semi-circular internal thread sleeve, a rotating sleeve is fixedly connected to the outer wall of the connecting ring, and bristles are fixedly connected to the outer wall of the rotating sleeve, so that the scraper sleeve is rotated and moved by the synchronous rotation of the rotating sleeve and the bristles.

[0012] Preferably, the rotating sleeve is a hollow annular structure, and the inner wall of the rotating sleeve is rotatably connected to the outer wall of the semi-circular internal threaded sleeve.

[0013] Preferably, the lifting ring itself is magnetic, the fixed magnetic ring itself is magnetic, and the magnetic fields on the opposite sides of the lifting ring and the fixed magnetic ring are opposite poles attracting each other, thereby achieving magnetic attraction and stabilization. When the elastic rope cannot pull the lifting ring, the lifting ring remains stable and stationary with the fixed magnetic ring.

[0014] Preferably, the semi-circular internal threaded sleeve has a semi-circular arc structure, the outer wall of the semi-circular internal threaded sleeve does not contact the inner wall of the long sliding groove, and the elastic rope itself is made of rubber and has elasticity, thereby pulling the lifting ring upward through elasticity.

[0015] This invention provides a rotary drying apparatus for metal powder. It has the following beneficial effects:

[0016] 1. This invention, by setting up a drying and stirring mechanism, can scrape off the metal powder adhering to the outer wall of the stirring blade in real time, preventing the problem of wet metal powder adhering to it. When the roller is thrown out, it will contact the inner wall of the long slide and roll on the inner wall of the long slide as it moves, thereby rotating and picking up the powder residue on the inner wall of the long slide. As it rotates, it is thrown off, ensuring the cleanliness of the inside of the long slide and ensuring the efficient and smooth sliding of the scraper sleeve. This reduces the friction during sliding and improves the wiping and cleaning effect of the scraper sleeve on the outer wall of the stirring blade. It also means that when the stirring blade stirs the metal powder inside the drying box, there will be no accumulation of metal powder due to adhesion, which would lead to the problem of half the drying effect.

[0017] 2. By setting up a drying agitation mechanism, while the stirring blades are used to stir the inside of the drying chamber horizontally, the agitator is also used to stir vertically in real time. When large-volume flipping of metal powder is performed, the agitator is used to flip small-scale flipping up and down. By simultaneously stirring and drying in different directions and with different degrees of large and small areas, the drying efficiency of metal powder is further improved.

[0018] 3. By setting up a drying and stirring mechanism, the elastic force of the elastic rope will be greater than the magnetic attraction between the lifting ring and the fixed magnetic ring. At this time, the lifting ring will be quickly pulled away from the magnetic attraction of the fixed magnetic ring, and the elastic rope will quickly rebound, pulling the lifting ring to slide upwards on the outer wall of the rotating shaft. This will thoroughly wipe the entire rotating shaft. Furthermore, the acceleration of the lifting ring will cause the residue on the outer wall of the rotating shaft to be quickly pushed out and dispersed inside the drying chamber, further ensuring the dispersion of metal powder, preventing accumulation, and improving the drying effect.

[0019] 4. By setting up a peeling mechanism, as the threaded rod drives the fixed sleeve and the agitator plate to rotate and agitate, the rotation of the threaded rod itself causes the semi-circular inner threaded sleeve to move along the inner thread of the threaded rod and rotate on the outer thread of the threaded rod. The fixed sleeve moves laterally and approaches the roller. Then, the connecting plate and scraper A also achieve comprehensive wiping and cleaning of the outer wall of the scraper sleeve and the outer wall of the threaded rod. This avoids the problem that small metal powder particles cannot be thrown off, which would lead to a large amount of mixing of different metal powders when different metal powders are agitated and dried, affecting the classification and purity of the dried metal powder.

[0020] 5. By setting up a peeling mechanism, the rotation of the rotating sleeve drives the bristles on the outer wall to quickly rotate and wipe the scraper B and the outer wall of the scraper sleeve, which fully sweeps away the residue that adheres to the outer wall of the scraper sleeve and the scraper B after scraping one side of the scraper sleeve. This allows the bristles to quickly scrape off the metal powder residue that is scraped together as the scraper sleeve slides on the outer wall of the stirring blade, avoiding the small metal powder residue that cannot be scraped due to the small gap between the scraper B and the outer wall of the scraper sleeve. The bristles thoroughly clean the fine powder.

[0021] 6. By setting up a drying and stirring mechanism, when the roller rotates and rolls on the inner wall of the long trough, it not only adheres to the inner wall of the long trough and is thrown off by its own rotational centrifugal force, but also, during rotation, through the relative rotational motion of the semi-circular bearing sleeve and the roller, because the semi-circular shape of the semi-circular bearing sleeve provides a continuous sliding and peeling effect on the outer wall of the roller, thus achieving the separation effect of metal powder on the outer wall of the roller. Attached Figure Description

[0022] Figure 1This is a schematic diagram of the structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the rotating shaft of the present invention;

[0024] Figure 3 This is a schematic diagram of the drying and stirring mechanism of the present invention. Figure 1 ;

[0025] Figure 4 For the present invention Figure 3 Enlarged view of point A;

[0026] Figure 5 This is a schematic diagram of the drying and stirring mechanism of the present invention. Figure 2 ;

[0027] Figure 6 For the present invention Figure 5 Enlarged view of point B;

[0028] Figure 7 This is a partial structural schematic diagram of the drying and stirring mechanism of the present invention;

[0029] Figure 8 This is a schematic diagram of the drying and stirring mechanism of the present invention. Figure 3 ;

[0030] Figure 9 This invention represents a three-dimensional transformation of the drying and stirring mechanism. Figure 1 ;

[0031] Figure 10 This invention represents a three-dimensional transformation of the drying and stirring mechanism. Figure 2 ;

[0032] Figure 11 For the present invention Figure 8 Enlarged view of point C;

[0033] Figure 12 This is a schematic diagram of the peeling mechanism of the present invention;

[0034] Figure 13 This is a schematic diagram of the disassembly structure of the peeling mechanism of the present invention.

[0035] In the diagram: 1. Top cover; 2. Drying oven; 3. Drying agitation mechanism; 301. Stirring blade; 302. Long chute; 303. Roller; 304. Threaded rod; 305. Fixed sleeve; 306. Actuating plate; 307. Semi-circular bearing sleeve; 308. Fixed block; 309. Elastic rope; 310. Lifting ring; 311. Fixed magnetic ring; 312. Scraper sleeve; 4. Peeling mechanism; 401. Semi-circular internal threaded sleeve; 402. Connecting plate; 403. Scraper A; 404. Sliding bar; 405. Scraper B; 406. Connecting ring; 407. Rotating sleeve; 408. Brush bristles; 5. Motor; 6. Rotating shaft; 7. Threaded outlet cover. Detailed Implementation

[0036] Please see Figure 1-4 This invention provides a technical solution: a rotary drying device for metal powder, comprising a drying chamber 2, a threaded outlet cover 7 threadedly connected to the bottom of the drying chamber 2, a top cover 1 fixedly connected to the top of the drying chamber 2, a motor 5 fixedly connected to the top of the top cover 1, a rotating shaft 6 fixedly connected to the output end of the motor 5, and a drying agitation mechanism 3 provided inside the drying chamber 2, the drying agitation mechanism 3 comprising:

[0037] The stirring blade 301 has a long, flat structure. The inner wall of the stirring blade 301 is provided with a long sliding groove 302. A scraper sleeve 312 is slidably connected to the inner wall of the long sliding groove 302. The stirring blade 301 is used to stir the metal powder to achieve the function of mixing and drying.

[0038] Roller 303 is a hollow ring mechanism. The outer wall of roller 303 contacts the inner wall of long slide groove 302. A semi-circular bearing sleeve 307 is rotatably connected to the outer wall of roller 303. The outer wall of semi-circular bearing sleeve 307 is fixedly connected to the outer wall of scraper sleeve 312. Roller 303 is used to rotate and roll on the inner wall of long slide groove 302.

[0039] Metal powder is placed inside drying chamber 2, and then the metal powder is quickly dried by the automatic drying inside drying chamber 2. During the drying process, motor 5 is started simultaneously to drive rotating shaft 6 to rotate automatically in both directions for a period of time. When rotating shaft 6, it will drive the stirring blade 301 on the outer wall of rotating shaft 6 to rotate synchronously. Thus, the metal powder is fully dried in real time by the rotation of stirring blade 301 and the drying inside drying chamber 2.

[0040] Furthermore, as the stirring blade 301 rotates, the scraper sleeve 312 on the inner wall of the stirring blade 301 slides in the long groove 302 opened on the inner wall of the stirring blade 301 due to the centrifugal force of the rotating stirring blade 301, moving away from the center of rotation of the rotating shaft 6. This allows for real-time scraping off of the metal powder adhering to the outer wall of the stirring blade 301 due to agitation and layering, preventing the problem of wet metal powder adhering to it. The centrifugal force of the rotating stirring blade 301 causes the scraper sleeve 312 on the inner wall of the long groove 302 and the roller 303 to be thrown out simultaneously. When the roller 303 is thrown out, it will... The long slide 302 contacts the inner wall and rolls on the inner wall of the long slide 302 as it moves, thereby rotating itself to pick up the powder residue on the inner wall of the long slide 302 and throw it off as it rotates, ensuring the cleanliness of the inside of the long slide 302 and ensuring the efficient and smooth sliding of the scraper sleeve 312, reducing the friction during sliding, and improving the wiping and cleaning effect of the scraper sleeve 312 on the outer wall of the stirring blade 301. It also means that when the stirring blade 301 stirs the metal powder inside the drying chamber 2, it will not accumulate due to the adhesion of metal powder, which would lead to the problem of half the result for twice the effort in drying.

[0041] Please see Figure 1-10 Based on Embodiment 1, the present invention provides a technical solution: a threaded rod 304 is fixedly connected to the inner wall of the roller 303, a fixed sleeve 305 is fixedly connected to the outer wall of the threaded rod 304, and a toggle plate 306 is fixedly connected to the outer wall of the fixed sleeve 305.

[0042] A fixing block 308 is fixedly connected to the outer wall of the semi-circular bearing sleeve 307. An elastic rope 309 is fixedly connected to the outer wall of the fixing block 308. A lifting ring 310 is fixedly connected to one end of the elastic rope 309. A fixed magnetic ring 311 is rotatably connected to the bottom of the lifting ring 310. The inner wall of the fixed magnetic ring 311 is rotatably connected to the outer wall of the rotating shaft 6. A peeling mechanism 4 is provided inside the drying oven 2.

[0043] When the roller 303 rotates, it will synchronously drive the threaded rod 304 to rotate. When the threaded rod 304 rotates, it will rotate synchronously with the fixed sleeve 305 and the agitator plate 306 through a fixed connection. This allows the agitator plate 306 to perform real-time vertical stirring while the stirring blade 301 is horizontally stirring the inside of the drying chamber 2. When the metal powder is being turned over in large quantities, the agitator plate 306 can be used to turn it over in small areas up and down. By simultaneously stirring and drying in different directions and with different degrees of large and small areas, the drying efficiency of the metal powder is further improved.

[0044] As the scraper sleeve 312 and roller 303 slide away from the rotation center of the rotating shaft 6 through centrifugal sliding on the inner wall of the long slide groove 302 until they reach a certain distance, the elastic rope 309 outside the fixed block 308 will be pulled by the semi-circular bearing sleeve 307 connected to the outer wall of the roller 303. The elastic rope 309 pulls the lifting ring 310. Originally, the lifting ring 310 and the fixed magnetic ring 311 are magnetically attracted and cannot be pulled by the elastic rope 309. However, when the elastic rope 309 is pulled and deformed to a certain extent by the fixed block 308, the elastic force of the elastic rope 309 will be greater than that of the fixed block 308. The magnetic attraction between the lifting ring 310 and the fixed magnetic ring 311 will quickly pull the lifting ring 310 away from the magnetic attraction of the fixed magnetic ring 311, and the elastic rope 309 will quickly rebound, pulling the lifting ring 310 to slide upward on the outer wall of the rotating shaft 6 from bottom to top, performing a comprehensive wipe of the rotating shaft 6. Furthermore, the acceleration of the lifting ring 310 will cause the residue on the outer wall of the rotating shaft 6 to be quickly pushed out and dispersed inside the drying chamber 2, further ensuring the dispersion of metal powder, preventing accumulation, and improving the drying effect.

[0045] Please see Figure 1-13 Based on Embodiments 1 and 2, the present invention provides a technical solution: the peeling mechanism 4 includes a semi-circular internal threaded sleeve 401, the outer wall of the threaded rod 304 is threadedly connected to the inner wall of the semi-circular internal threaded sleeve 401, a connecting plate 402 is fixedly connected to the outer wall of the semi-circular internal threaded sleeve 401, a scraper A403 is fixedly connected to the outer wall of the connecting plate 402, the inner wall of the scraper A403 is slidably connected to the outer wall of the scraper sleeve 312, a sliding strip 404 is slidably connected to the inner wall of the connecting plate 402, and the outer wall of the sliding strip 404 is fixedly connected to the outer wall of the scraper sleeve 312.

[0046] A scraper B405 is fixedly connected to the outer wall of the connecting plate 402, a connecting ring 406 is fixedly connected to the outer wall of the semi-circular internal thread sleeve 401, a rotating sleeve 407 is fixedly connected to the outer wall of the connecting ring 406, and a brush bristle 408 is fixedly connected to the outer wall of the rotating sleeve 407.

[0047] The rotating sleeve 407 is a hollow annular structure, and the inner wall of the rotating sleeve 407 is rotatably connected to the outer wall of the semi-circular internal threaded sleeve 401.

[0048] The lifting ring 310 is magnetic, and the fixed magnetic ring 311 is magnetic. The magnetic properties of the lifting ring 310 and the fixed magnetic ring 311 on opposite sides are magnetic properties of opposite poles attracting each other.

[0049] The semi-circular internal threaded sleeve 401 has a semi-circular arc structure. The outer wall of the semi-circular internal threaded sleeve 401 does not contact the inner wall of the long sliding groove 302. The elastic rope 309 itself is made of rubber and has elasticity.

[0050] As the threaded rod 304 drives the fixed sleeve 305 and the agitator plate 306 to rotate and agitate, the rotation of the threaded rod 304 itself causes the semi-circular inner threaded sleeve 401 to rotate and move along the inner thread of the threaded rod 304. The fixed sleeve 305 moves laterally and approaches the roller 303. Then, the connecting plate 402 and the scraper A403 and scraper B405 also achieve comprehensive wiping and cleaning of the outer wall of the scraper sleeve 312 and the outer wall of the threaded rod 304. This avoids the problem that small metal powder particles cannot be thrown off, which would lead to a large amount of mixing of different metal powders when different metal powders are agitated and dried, affecting the classification and purity of the dried metal powder.

[0051] Furthermore, when the threaded rod 304 rotates, it also drives the rotating sleeve 407 located on the outer wall of the semi-circular inner threaded sleeve 401 to rotate through the connecting ring 406. The rotation of the rotating sleeve 407 drives the bristles 408 on the outer wall to quickly rotate and wipe the scraper B405 and the outer wall of the scraper sleeve 312, thoroughly sweeping away the residue that adheres to the outer wall of the scraper sleeve 312 and the scraper B405 after scraping one side of the scraper sleeve 312. This allows the metal powder residue that is scraped together by the scraper sleeve 312 as it slides on the outer wall of the stirring blade 301 to be quickly scraped off by the bristles 408, avoiding the small gaps between the scraper B405 and the outer wall of the scraper sleeve 312 that cannot be scraped. The bristles 408 thoroughly clean the fine powder.

[0052] When the roller 303 rotates and rolls on the inner wall of the long slide groove 302, it not only adheres to the inner wall of the long slide groove 302 and is thrown off by its own rotational centrifugal force, but also, during rotation, through the relative rotational motion of the semi-circular bearing sleeve 307 and the roller 303, because the semi-circular bearing sleeve 307 is semi-circular in shape, it also provides a continuous sliding and peeling effect on the outer wall of the roller 303 to remove metal powder, thus achieving the separation effect of metal powder on the outer wall of the roller 303;

[0053] Furthermore, when the lifting ring 310 is rapidly pulled upward by the elastic rope 309, it will quickly flip the metal powder inside the drying chamber 2 from bottom to top. At this time, the rotating shaft 6 gradually decelerates and begins to reverse. The lifting ring 310 returns to its original position due to gravity, and the elastic rope 309 pulls the fixing block 308, the semi-circular bearing sleeve 307, and the roller 303 back to their original positions, thus achieving a reset. As it begins to reverse, it rotates further and works again, repeating this process.

[0054] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A rotary drying device for metal powder, comprising a drying chamber (2), wherein a threaded outlet cover (7) is threadedly connected to the bottom of the drying chamber (2), a top cover (1) is fixedly connected to the top of the drying chamber (2), a motor (5) is fixedly connected to the top of the top cover (1), a rotating shaft (6) is fixedly connected to the output end of the motor (5), and a drying agitation mechanism (3) is provided inside the drying chamber (2), characterized in that: The drying and agitating mechanism (3) includes: The stirring blade (301) is a long, flat structure. The inner wall of the stirring blade (301) is provided with a long sliding groove (302). A scraper sleeve (312) is slidably connected to the inner wall of the long sliding groove (302). The stirring blade (301) is used to stir the metal powder to achieve the function of mixing and drying. Roller (303), the roller (303) is a hollow ring mechanism, the outer wall of the roller (303) is in contact with the inner wall of the long slide groove (302), the outer wall of the roller (303) is rotatably connected with a semi-circular bearing sleeve (307), the outer wall of the semi-circular bearing sleeve (307) is fixedly connected with the outer wall of the scraper sleeve (312), the roller (303) is used to rotate and roll on the inner wall of the long slide groove (302); A threaded rod (304) is fixedly connected to the inner wall of the roller (303), a fixed sleeve (305) is fixedly connected to the outer wall of the threaded rod (304), and a toggle plate (306) is fixedly connected to the outer wall of the fixed sleeve (305). A fixing block (308) is fixedly connected to the outer wall of the semi-circular bearing sleeve (307). An elastic rope (309) is fixedly connected to the outer wall of the fixing block (308). A lifting ring (310) is fixedly connected to one end of the elastic rope (309). A fixed magnetic ring (311) is rotatably connected to the bottom of the lifting ring (310). The inner wall of the fixed magnetic ring (311) is rotatably connected to the outer wall of the rotating shaft (6). A peeling mechanism (4) is provided inside the drying box (2). The peeling mechanism (4) includes a semi-circular internal threaded sleeve (401), the outer wall of the threaded rod (304) is threadedly connected to the inner wall of the semi-circular internal threaded sleeve (401), a connecting plate (402) is fixedly connected to the outer wall of the semi-circular internal threaded sleeve (401), a scraper A (403) is fixedly connected to the outer wall of the connecting plate (402), the inner wall of the scraper A (403) is slidably connected to the outer wall of the scraper sleeve (312), a sliding strip (404) is slidably connected to the inner wall of the connecting plate (402), and the outer wall of the sliding strip (404) is fixedly connected to the outer wall of the scraper sleeve (312). The outer wall of the connecting plate (402) is fixedly connected to a scraper B (405), the outer wall of the semi-circular internal thread sleeve (401) is fixedly connected to a connecting ring (406), the outer wall of the connecting ring (406) is fixedly connected to a rotating sleeve (407), and the outer wall of the rotating sleeve (407) is fixedly connected to a brush bristle (408). The rotating sleeve (407) has a hollow annular structure, and the inner wall of the rotating sleeve (407) is rotatably connected to the outer wall of the semi-circular internal thread sleeve (401). The lifting ring (310) is magnetic, the fixed magnetic ring (311) is magnetic, and the magnetic properties of the lifting ring (310) and the fixed magnetic ring (311) on opposite sides are attracted to each other.

2. The rotary drying apparatus for metal powder according to claim 1, characterized in that: The semi-circular internal thread sleeve (401) has a semi-circular arc structure. The outer wall of the semi-circular internal thread sleeve (401) does not contact the inner wall of the long sliding groove (302). The elastic rope (309) itself is made of rubber and has elasticity.

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