Powder demagnetizing and screening device
The drive mechanism enables seamless switching of the electromagnetic roller and convenient cleaning of the cleaning mechanism, solving the problem that the electromagnetic roller needs to be stopped for cleaning in the existing technology. This improves the efficiency of powder demagnetization and the convenience of cleaning, and ensures the continuity of the powder screening process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHOUGUANG KETAI CHEM CO LTD
- Filing Date
- 2025-08-27
- Publication Date
- 2026-06-16
AI Technical Summary
Existing demagnetizing screening devices require shutdown for cleaning when iron impurities cover the surface of the electromagnetic roller, which affects the powder demagnetization efficiency and the cleaning method is inconvenient.
A powder demagnetization sieving device was designed, which uses a drive mechanism to achieve seamless switching of electromagnetic rollers and convenient cleaning mechanism. The drive mechanism enables the electromagnetic rollers to work alternately without stopping the machine, and the cleaning mechanism scrapes off the adhering iron filings.
It improves the efficiency and ease of cleaning of powder demagnetization, ensures the continuity of the powder sieving process, and avoids iron impurities remaining on the surface of the electromagnetic roller.
Smart Images

Figure CN224358909U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of chemical powder demagnetization technology, specifically a powder demagnetization sieving device. Background Technology
[0002] As a basic raw material in high-end industrial fields such as pharmaceuticals, fine chemicals, electronic materials, and new energy, the purity and particle size uniformity of chemical powders directly determine the performance of end products. When refining and smelting chemical powders, it is necessary to screen and demagnetize them, which requires the use of demagnetizing screening devices.
[0003] Existing demagnetizing screening devices typically consist of multiple sets of electromagnetic rollers installed inside a housing. These rollers adsorb and demagnetize iron impurities in the powder being fed. However, when the surface of the electromagnetic rollers is covered with iron impurities, the machine needs to be stopped to clean the iron filings. Otherwise, the adsorption of iron impurities in the powder will be affected, resulting in incomplete removal of iron filings. This cleaning method is inconvenient and significantly reduces the efficiency of powder demagnetization. Therefore, we propose a powder demagnetizing screening device. Utility Model Content
[0004] In view of the shortcomings of the prior art mentioned in the background, the present invention provides a powder demagnetization sieving device.
[0005] This utility model overcomes the above technical problems by adopting the following technical solution:
[0006] A powder demagnetizing and sieving device includes: a housing, with two placement slots on each side of the housing, a dustproof box and a chip discharge box connected to each side of the housing, a groove on one side of the front of the dustproof box, a driving mechanism on the front of the dustproof box, a demagnetizing component between each of the two placement slots and two other placement slots, and the two demagnetizing components extending into the interior of the dustproof box and the chip discharge box respectively, the driving mechanism extending into the interior of the groove and engaging with the two demagnetizing components, a sliding groove on the top of the chip discharge box, and a cleaning mechanism between one side of the housing and the top of the chip discharge box, extending into the interior of the chip discharge box and connecting to the inner wall of the chip discharge box.
[0007] As a further embodiment of this utility model: the drive mechanism includes a U-shaped frame, a mounting plate, a dual-axis motor, and gears. The U-shaped frame is connected to one side of the front of the dustproof box, the mounting plate is connected to the back of the inner wall of the U-shaped frame, and the mounting plate extends into the interior of the groove. The dual-axis motor is connected to the interior of the mounting plate, and both ends of the dual-axis motor extend to the exterior of the mounting plate. The two gears are respectively connected to both ends of the output shaft of the dual-axis motor.
[0008] As a further embodiment of this utility model: the demagnetizing component includes a limiting frame, an electromagnetic roller, and a toothed groove. The limiting frame is placed inside the dustproof box and between one of the placement slots, and the front and back of the limiting frame are respectively attached to the inner wall of one of the placement slots. The electromagnetic roller is connected to one side of the limiting frame, and the toothed groove is opened on the front of the limiting frame.
[0009] As a further improvement of this invention, the tooth groove meshes with one of the gears.
[0010] As a further embodiment of this utility model: the cleaning mechanism includes a hollow shell, a threaded block, a threaded rod, a forward and reverse motor, two guide rods, and a scraper. The hollow shell is connected between one side of the housing and the top of the chip removal box. The threaded block is rotatably connected between one side of the housing and one side of the inner wall of the hollow shell, and one end of the threaded block extends to one side of the hollow shell. The threaded rod is threadedly connected to the outer surface of the threaded block, and the bottom end of the threaded rod extends through the transverse groove into the interior of the chip removal box. The forward and reverse motor is connected to one side of the hollow shell, and one end of the output shaft of the forward and reverse motor is connected to one end of the threaded block. Both guide rods are connected between one side of the housing and one side of the inner wall of the chip removal box. The scraper is connected to the bottom of the threaded rod.
[0011] As a further improvement of this utility model, the scraper is adapted to the outer surface of the electromagnetic roller.
[0012] As a further improvement of this utility model: a drawer is placed at the bottom of the inner wall of the box, and the drawer extends to the front of the box, and multiple bases are connected to the bottom of the box.
[0013] By adopting the above structure, this utility model has the following advantages compared with the prior art:
[0014] 1. In this utility model, the two electromagnetic rollers can be seamlessly switched by the operator through the driving mechanism and the two demagnetizing components. The entire switching process does not require stopping the device, ensuring continuous powder screening and thus improving the efficiency of the device in screening iron impurities in the powder, thereby improving the practicality of the device.
[0015] 2. In this utility model, the cleaning mechanism facilitates the easy scraping and cleaning of the electromagnetic roller with adhering iron filings by the workers, avoiding the situation where some iron impurities will still adhere to the surface of the electromagnetic roller after the power is turned off, thereby improving the convenience of cleaning the electromagnetic roller by the workers and further improving the practicality of this device. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2This is a schematic diagram of the internal structure of the dustproof box, the box body, and the chip discharge box.
[0018] Figure 3 A schematic diagram showing the positions of the tank body, placement slots, and horizontal slots;
[0019] Figure 4 This is a schematic diagram of the drive mechanism and demagnetizing component of this utility model;
[0020] Figure 5 This is a schematic diagram of the cleaning mechanism of this utility model.
[0021] In the diagram: 1. Housing; 2. Dustproof box; 3. Drive mechanism; 301. U-shaped frame; 302. Mounting plate; 303. Dual-axis motor; 304. Gear; 4. Demagnetizing assembly; 401. Limit frame; 402. Electromagnetic roller; 403. Gear groove; 5. Chip conveyor; 6. Cleaning mechanism; 601. Hollow shell; 602. Threaded block; 603. Threaded rod; 604. Forward and reverse motor; 605. Guide rod; 606. Scraper; 7. Drawer box; 8. Base. Detailed Implementation
[0022] 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.
[0023] Example 1:
[0024] Please see Figures 1-5 In this embodiment of the present invention, a powder demagnetizing and sieving device includes: a box body 1, two placement slots are respectively opened on both sides of the box body 1, a dustproof box 2 and a chip discharge box 5 are respectively connected to the two sides of the box body 1, a groove is opened on one side of the front of the dustproof box 2, a driving mechanism 3 is provided on the front of the dustproof box 2, a demagnetizing component 4 is provided between the two placement slots and the other two placement slots, and the two demagnetizing components 4 extend into the interior of the dustproof box 2 and the chip discharge box 5 respectively, the driving mechanism 3 extends into the interior of the groove and engages with the two demagnetizing components 4, a sliding groove is opened on the top of the chip discharge box 5, a cleaning mechanism 6 is provided between one side of the box body 1 and the top of the chip discharge box 5, and the cleaning mechanism 6 extends into the interior of the chip discharge box 5 and connects to the inner wall of the chip discharge box 5.
[0025] Specifically, when one of the demagnetizing components 4 is covered with iron filings, the drive mechanism 3 can be activated to move the two demagnetizing components 4 from the inside of the housing 1 to the inside of the chip discharge box 5 and from the inside of the chip discharge box 5 to the inside of the housing 1, respectively, thus completing the alternating operation without stopping the machine to clean one of the demagnetizing components 4, thereby improving the efficiency of powder demagnetization and screening. By activating the cleaning mechanism 6, the iron filings on the surface of one of the demagnetizing components 4 inside the chip discharge box 5 can be scraped off, thus completing the cleaning of the iron filings on the surface of one of the demagnetizing components 4.
[0026] Example 2:
[0027] Please see Figures 3-4 In this embodiment of the present invention, a powder demagnetizing and sieving device includes a driving mechanism 3 comprising a U-shaped frame 301, a mounting plate 302, a dual-shaft motor 303, and gears 304. The U-shaped frame 301 is connected to one side of the front of the dustproof box 2. The mounting plate 302 is connected to the back of the inner wall of the U-shaped frame 301 and extends into the interior of the trough. The dual-shaft motor 303 is connected to the interior of the mounting plate 302, and both ends of the dual-shaft motor 303 extend to the exterior of the mounting plate 302. Two gears 304... Wheels 304 are connected to both ends of the output shaft of the dual-axis motor 303. The demagnetizing assembly 4 includes a limiting frame 401, an electromagnetic roller 402, and a toothed groove 403. The limiting frame 401 is placed inside the dustproof box 2 and between one of the placement slots. The front and back of the limiting frame 401 are respectively attached to the inner wall of one of the placement slots. The electromagnetic roller 402 is connected to one side of the limiting frame 401. The toothed groove 403 is opened on the front of the limiting frame 401 and meshes with one of the gears 304.
[0028] Specifically, the powder is fed evenly by two vibrating screens, and iron impurities in the powder are adsorbed by an electromagnetic roller 402. When the surface of the electromagnetic roller 402 is covered with iron impurities, the two output shafts of the dual-shaft motor 303 are started to drive the two gears 304 to rotate. One gear 304 pushes the tooth groove 403 to move the limiting frame 401. After the limiting frame 401 moves a certain distance, one side of the inner wall of the limiting frame 401 will be flush with one side of the inner wall of the box 1, and the electromagnetic roller 402 will completely enter the interior of the chip box 5. At the same time, the other gear 304 will drive another demagnetizing component 4 to move into the interior of the box 1, so that the other demagnetizing component 4 can continue to adsorb iron impurities without stopping the machine to process the electromagnetic roller 402, thus improving the efficiency of powder demagnetization and screening.
[0029] Example 3:
[0030] Please see Figures 1-5In this embodiment of the present invention, a powder demagnetizing and sieving device includes a cleaning mechanism 6 comprising a hollow shell 601, a threaded block 602, a threaded rod 603, a forward and reverse motor 604, two guide rods 605, and a scraper 606. The hollow shell 601 is connected between one side of the housing 1 and the top of the chip discharge box 5. The threaded block 602 is rotatably connected between one side of the housing 1 and one side of the inner wall of the hollow shell 601, with one end of the threaded block 602 extending to one side of the hollow shell 601. The threaded rod 603 is threadedly connected to the outer surface of the threaded block 602. The bottom end of 03 extends through the transverse groove into the interior of the chip box 5. The forward and reverse motor 604 is connected to one side of the hollow shell 601, and one end of the output shaft of the forward and reverse motor 604 is connected to one end of the threaded block 602. The two guide rods 605 are connected between one side of the box body 1 and one side of the inner wall of the chip box 5. The scraper 606 is connected to the bottom of the threaded rod 603. The scraper 606 is adapted to the outer surface of the electromagnetic roller 402. A drawer box 7 is placed at the bottom of the inner wall of the box body 1, and the drawer box 7 extends to the front of the box body 1. Multiple bases 8 are connected to the bottom of the box body 1.
[0031] Specifically, the electromagnetic roller 402 is turned off to stop adsorbing iron impurities. The output shaft of the forward and reverse motor 604 is started to drive the threaded block 602 to rotate, causing the threaded rod 603 to move in a threaded manner. Guided by the two guide rods 605, the scraper 606 can move stably, allowing the guide rods 605 to pass through the outer surface of the electromagnetic roller 402 and scrape off the iron impurities adhering to its surface. This completes the convenient cleaning of iron impurities on the electromagnetic roller 402. The scraped impurities can be discharged through the bottom of the chip box 5. The sieved powder can be collected by the action of the drawer box 7, and the drawer box 7 can be easily removed from the inside of the box 1. The stability of the device during operation can be improved by the action of multiple bases 8.
[0032] The working principle of this utility model is as follows: When demagnetizing chemical powder is required, the operator first pours the powder into the inside of the box 1. The powder is then vibrated by two vibrating screens to ensure even and continuous feeding. Next, the electromagnetic roller 402 adsorbs iron impurities from the powder. When the surface of the electromagnetic roller 402 is covered with iron impurities, the operator starts the dual-axis motor 303. The two output shafts of the dual-axis motor 303 drive two gears 304 to rotate. When one gear 304 rotates, it pushes the tooth groove 403 to move the limiting frame 401, causing the limiting frame 401 to move stably to the right under the guide of one of the limiting grooves. This moves the electromagnetic roller 402 into the chip removal box 5 until one side of the inner wall of the limiting frame 401 is flush with one side of the inner wall of the box 1. At this point, the electromagnetic roller 402 will be fully inside the chip removal box 5. The other gear 304, when rotating, will drive the other... One demagnetizing component 4 moves into the housing 1, allowing the other demagnetizing component 4 to continue adsorbing iron impurities without stopping the electromagnetic roller 402. During replacement, the two vibrating screens can be stopped to reduce the powder feeding speed. When the electromagnetic roller 402, covered with iron impurities, enters the chip discharge box 5, the electromagnetic roller 402 is shut off and stops adsorbing iron impurities. At this time, the operator starts the forward and reverse motor 604. The output shaft of the forward and reverse motor 604 drives the threaded block 602 to rotate. When the threaded block 602 rotates, the threaded rod 603 moves in a threaded manner, which in turn drives the scraper 606 to move. Under the action of the two guide rods 605, the scraper 606 is guided so that after the guide rods 605 are sleeved on the outer surface of the electromagnetic roller 402, the iron impurities adhering to the outer surface of the electromagnetic roller 402 can be scraped off, thus completing the cleaning of iron impurities on the electromagnetic roller 402.
[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention.
Claims
1. A powder demagnetization and sieving device, characterized in that, include: The box (1) has two placement slots on its two sides. The two sides of the box (1) are connected to a dustproof box (2) and a chip removal box (5). A groove is provided on one side of the front of the dustproof box (2). A drive mechanism (3) is provided on the front of the dustproof box (2). A demagnetizing component (4) is provided between the two placement slots and the other two placement slots. The two demagnetizing components (4) extend into the interior of the dustproof box (2) and the chip removal box (5). The drive mechanism (3) extends into the interior of the groove and engages with the two demagnetizing components (4). A sliding groove is provided on the top of the chip removal box (5). A cleaning mechanism (6) is provided between one side of the box (1) and the top of the chip removal box (5). The cleaning mechanism (6) extends into the interior of the chip removal box (5) and connects to the inner wall of the chip removal box (5).
2. The powder demagnetization and sieving device according to claim 1, characterized in that, The drive mechanism (3) includes a U-shaped frame (301), a mounting plate (302), a dual-axis motor (303), and gears (304). The U-shaped frame (301) is connected to one side of the front of the dustproof box (2). The mounting plate (302) is connected to the back of the inner wall of the U-shaped frame (301) and extends into the interior of the groove. The dual-axis motor (303) is connected to the interior of the mounting plate (302) and both ends of the dual-axis motor (303) extend to the exterior of the mounting plate (302). The two gears (304) are respectively connected to the two ends of the output shaft of the dual-axis motor (303).
3. The powder demagnetization and sieving device according to claim 1, characterized in that, The demagnetizing assembly (4) includes a limiting frame (401), an electromagnetic roller (402), and a toothed groove (403). The limiting frame (401) is placed inside the dustproof box (2) and between one of the placement slots, and the front and back of the limiting frame (401) are respectively attached to the inner wall of one of the placement slots. The electromagnetic roller (402) is connected to one side of the limiting frame (401), and the toothed groove (403) is opened on the front of the limiting frame (401).
4. The powder demagnetization and sieving device according to claim 3, characterized in that, The tooth groove (403) meshes with one of the gears (304).
5. The powder demagnetization sieving device according to claim 1, characterized in that, The cleaning mechanism (6) includes a hollow shell (601), a threaded block (602), a threaded rod (603), a forward and reverse motor (604), two guide rods (605), and a scraper (606). The hollow shell (601) is connected between one side of the housing (1) and the top of the chip box (5). The threaded block (602) is rotatably connected between one side of the housing (1) and one side of the inner wall of the hollow shell (601), and one end of the threaded block (602) extends to one side of the hollow shell (601). The threaded rod... (603) The threaded connection is on the outer surface of the threaded block (602), and the bottom end of the threaded rod (603) extends through the transverse groove to the inside of the chip box (5). The forward and reverse motor (604) is connected to one side of the hollow shell (601), and one end of the output shaft of the forward and reverse motor (604) is connected to one end of the threaded block (602). The two guide rods (605) are connected between one side of the housing (1) and one side of the inner wall of the chip box (5). The scraper (606) is connected to the bottom of the threaded rod (603).
6. The powder demagnetization sieving device according to claim 5, characterized in that, The scraper (606) is adapted to the outer surface of the electromagnetic roller (402).
7. The powder demagnetization sieving device according to claim 1, characterized in that, A drawer (7) is placed at the bottom of the inner wall of the box (1), and the drawer (7) extends to the front of the box (1). A plurality of bases (8) are connected to the bottom of the box (1).