A powder material screening and impurity removal device
By combining primary screening devices, submicron screening devices, vibration, ultrasound, electrostatic fields, and magnetic rod grids for multi-stage screening and impurity removal, the problem of inefficient screening and impurity removal by existing equipment has been solved, enabling high-precision powder material processing and improving powder purity and production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUZHEN LABORATORY
- Filing Date
- 2025-03-28
- Publication Date
- 2026-05-26
Smart Images
Figure CN224272203U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of powder processing technology, and more specifically, to a powder material screening and impurity removal device. Background Technology
[0002] High-purity nanoparticles are required in the manufacture of ceramics. These high-purity nanoparticles have extremely high purity requirements. Even a trace amount of impurities can have an adverse effect on the finished ceramics, leading to a decline in key properties such as density, mechanical properties, optical properties, and sintering uniformity of the subsequently formed products.
[0003] To achieve uniform particle size distribution in powder processing, remove organic impurities, and improve powder purity and product quality, existing sieving technologies generally employ mechanical vibration. However, current equipment cannot achieve higher-precision sieving and impurity removal, at most reaching the micron level (commonly 20 to 200 mesh). Furthermore, existing sieving technologies primarily target large, easily removable impurities, failing to effectively remove ferrous impurities that may be introduced into industrial production. While magnetic rod impurity removal devices exist, sieving is performed on the sieving equipment first, followed by impurity removal in another device. This process is inefficient and costly. Therefore, there is an urgent need for an integrated sieving and impurity removal system capable of achieving higher precision in powder materials, enabling faster and more effective sieving and impurity removal. Utility Model Content
[0004] To solve the above-mentioned technical problems, this utility model provides a powder material screening and impurity removal device, which can perform integrated screening and impurity removal of powder materials with higher precision, perform grading screening according to different needs, improve the screening and impurity removal speed, improve the purity of powder, and improve the final product quality.
[0005] The powder material screening and impurity removal equipment provided by this utility model includes:
[0006] A primary screening device, comprising a primary screen;
[0007] A submicron-level screening device is disposed below the primary screening device and has a submicron-level screen.
[0008] A vibration generating device is connected to the submicron-level screening device to provide it with mechanical vibration;
[0009] An ultrasonic generator is connected to the submicron-level sieving device to provide ultrasonic vibration thereon;
[0010] An electrostatic generator is connected to the submicron-level sieving device to provide it with an electrostatic field;
[0011] The impurity removal device is disposed below the submicron level screening device and includes at least three layers of magnetic rod mesh.
[0012] Preferably, in the above-mentioned powder material screening and impurity removal equipment, the submicron screen is a detachable 500-mesh to 1500-mesh screen.
[0013] Preferably, in the above-mentioned powder material screening and impurity removal equipment, the primary screening device includes a large particle screening component, which has a detachable 50-mesh to 200-mesh screen.
[0014] Preferably, the above-mentioned powder material screening and impurity removal equipment further includes a micron-level screening device disposed between the submicron-level screening device and the primary screening device, the micron-level screening device having a detachable 250-mesh to 450-mesh screen.
[0015] Preferably, in the above-mentioned powder material screening and impurity removal equipment, the micron-level screening device is also connected to the ultrasonic generator.
[0016] Preferably, in the above-mentioned powder material screening and impurity removal equipment, the micron-level screening device has a switchable micron-level screening outlet on its side.
[0017] Preferably, in the above-mentioned powder material screening and impurity removal equipment, the side of the large particle screening component is provided with an openable large particle screening outlet.
[0018] Preferably, in the above-mentioned powder material screening and impurity removal equipment, the magnetic rods in the magnetic rod grid are electromagnetic magnetic rods or permanent magnet magnetic rods with a diameter of 2 cm to 3 cm and a magnetic force value greater than 14000 Gauss. The spacing between adjacent magnetic rods is greater than the diameter of the magnetic rods. The two adjacent layers of magnetic rod grids are parallel to each other and are staggered in the horizontal direction.
[0019] Preferably, the above-mentioned powder material screening and impurity removal equipment further includes a baffle with through holes corresponding to each layer of the magnetic rod mesh. The magnetic rod passes through the through holes, and the magnetic rod and the through holes are in close contact through a sealing jacket. Each layer of the magnetic rod mesh is fixed in a drawer, and the drawer is connected to a pneumatic pipeline. The pneumatic pipeline is used to drive the drawer to be pulled out and to drive the magnetic rod to move relative to the baffle to scrape off the impurities adsorbed on the surface of the magnetic rod. An impurity removal container is also provided at the bottom of the magnetic rod mesh. The outlet of the impurity removal container is opened on the side of the impurity removal device and can accommodate the scraped impurities to achieve the separation of powder and impurities.
[0020] Preferably, in the above-mentioned powder material screening and impurity removal equipment, the submicron-level screening device has an openable submicron-level screening outlet at its bottom.
[0021] As can be seen from the above technical solution, the powder material screening and impurity removal equipment provided by this utility model includes a primary screening device with a primary screen; a submicron-level screening device, located below the primary screening device and also with a submicron-level screen, allows the powder after primary screening to fall onto the submicron-level screening device for further submicron-level screening. It also includes a vibration generator connected to the submicron-level screening device to provide mechanical vibration; an ultrasonic generator connected to the submicron-level screening device to provide ultrasonic vibration; and an electrostatic generator connected to the submicron-level screening device. The screening device provides an electrostatic field, thus combining vibration, ultrasound, and electrostatic methods to achieve rapid screening of submicron particles. Furthermore, it includes a purification device located below the submicron screening device, comprising at least three layers of magnetic rod mesh, which adsorbs iron impurities introduced at any stage, ensuring that impurities do not enter the final screened powder. Therefore, this powder material screening and purification equipment can perform integrated screening and purification of powder materials with higher precision, allowing for graded screening according to different needs, increasing the speed of screening and purification, improving powder purity, and enhancing the final product quality. Attached Figure Description
[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0023] Figure 1 This is a schematic diagram of an embodiment of a powder material screening and impurity removal device provided by this utility model. Detailed Implementation
[0024] The core of this utility model is to provide a powder material screening and impurity removal device, which can perform integrated screening and impurity removal of powder materials with higher precision, perform grading screening according to different needs, improve the screening and impurity removal speed, improve the purity of powder, and improve the final product quality.
[0025] 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.
[0026] An example of the powder material screening and impurity removal equipment provided by this utility model. Figure 1 As shown, Figure 1 This is a schematic diagram of an embodiment of a powder material screening and impurity removal device provided by this utility model. The powder material screening and impurity removal device may include:
[0027] The primary screening device 1 has a primary screen. It should be noted that the material of the primary screening device 1 can be 316L stainless steel, high molecular weight polyimide (PI), or high-strength corrosion-resistant nylon. The primary screen can include a large particle screening component. The large particle screening component has a detachable 50-mesh to 200-mesh screen, which can filter blocky and large particle impurities. Mechanical vibration can be used for screening to prevent these blocky and large particle impurities from falling onto the submicron screening device 2. This detachable design can ensure that it is easy to combine with other types of screens. It can be connected by quick snaps or fixing springs, but is not limited to. When replacing, simply loosen the snaps or fixing springs to quickly remove the old screen and install the new screen module to achieve grading of different particle sizes.
[0028] Submicron-level sieving device 2 is located below the primary sieving device 1 and has a submicron-level screen. It should be noted that the material of the submicron-level sieving device 2 can be existing materials such as 316 stainless steel or 316L stainless steel. The submicron-level screen can be a detachable 500-mesh to 1500-mesh screen to sieve submicron powder. The detachable design ensures that the submicron-level screen can be easily combined with screens of other mesh sizes. It can be connected by, but is not limited to, quick-release buckles or fixing springs. When replacing, simply loosen the buckles or fixing springs to quickly remove the old screen and install the new screen module to achieve grading of different particle sizes. It can sieve submicron-level or nano-level powders according to actual needs.
[0029] Vibration generator 3 is connected to submicron-level screening device 2 to provide it with mechanical vibration. Specifically, a motor and spring can be directly installed at the bottom of submicron-level screening device 2 to provide mechanical vibration, so that submicron-level screening device 2 vibrates continuously so that submicron powder on its screen passes through the screen holes and falls down, thereby achieving faster screening.
[0030] An ultrasonic generator 4 is connected to a submicron-level sieving device 2 to provide ultrasonic vibration. Specifically, the ultrasonic generator 4 can be connected to an ultrasonic transducer located on the side of the submicron-level sieving device 2, so that the powder on the submicron-level screen can be separated from each other under the action of ultrasonic vibration, thereby further improving the efficiency of powder sieving.
[0031] An electrostatic generator 5 is connected to a submicron-level sieving device 2 to provide an electrostatic field. Specifically, the electrostatic generator 5 is in direct contact with the submicron-level sieving device 2, so that the two can form a whole carrying electrostatic charge. The electric field force of the electrostatic field is used to separate materials with different conductivity. By combining electrostatic, ultrasonic and mechanical vibration, more efficient screening of submicron powders can be achieved.
[0032] The impurity removal device 6 is located below the submicron-level sieving device and includes at least three layers of magnetic rod mesh. Specifically, this impurity removal device 6 can be connected to the submicron-level sieving device 2 using quick-release components, which ensures flexible disassembly, replacement, and cleaning. The magnetic rods used in the magnetic rod mesh can be electromagnetic or permanent magnet rods with a diameter of 2 to 3 centimeters and a magnetic force greater than 14,000 Gauss. The spacing between adjacent magnetic rods is greater than the diameter of the magnetic rods. The adjacent layers of magnetic rod mesh are parallel to each other and staggered horizontally. In this way, the powder falling from top to bottom can pass through at least three layers of magnetic rod mesh in sequence. When the magnetic impurities pass through the first layer of magnetic rod mesh, some of them are adsorbed on the magnetic rods. As the other part continues to fall, a certain proportion is adsorbed by the second layer of magnetic rod mesh. The magnetic impurities that are not adsorbed continue to fall to the third or even the fourth layer and are adsorbed in sequence, ultimately achieving a higher proportion of impurity removal, which can ensure that there are no impurities in the final powder.
[0033] It should also be noted that continued reference is recommended. Figure 1 The powder material screening and impurity removal equipment may also include a powder inlet 7 located at the top and a powder outlet 8 located at the bottom. The powder to be screened can be put into the equipment through the powder inlet 7. After multiple stages of screening, the finished product powder with submicron or nanoscale scale finally flows out from the powder outlet 8 at the bottom.
[0034] As can be seen from the above technical solutions, in the embodiments of the powder material screening and impurity removal equipment provided by this utility model, since it includes a primary screening device with a primary screen; a submicron screening device, disposed below the primary screening device and also having a submicron screen, allows the powder after primary screening to fall onto the submicron screening device for further submicron screening. It also includes a vibration generator connected to the submicron screening device to provide mechanical vibration; an ultrasonic generator connected to the submicron screening device to provide ultrasonic vibration; and an electrostatic generator connected to the submicron screening device. The screening device provides an electrostatic field, thus combining vibration, ultrasound, and electrostatic methods to achieve submicron particle size screening. Furthermore, it includes a purification device located below the submicron screening device, comprising at least three layers of magnetic rod mesh, which adsorbs iron impurities introduced at any stage, ensuring that impurities do not enter the final screened powder. Therefore, this powder material screening and purification equipment can perform integrated screening and purification of powder materials with higher precision, allowing for graded screening according to different needs, increasing the speed of screening and purification, improving powder purity, and enhancing the final product quality.
[0035] Continue to refer to Figure 1 In a specific embodiment of the above-mentioned powder material screening and impurity removal equipment, a micron-level screening device 9 may also be provided between the submicron-level screening device 2 and the primary screening device 1. The material of the micron-level screening device 9 may be 316L stainless steel, high molecular weight polyimide (PI) or high-strength corrosion-resistant nylon. This micron-level screening device 9 may have a detachable 250-mesh to 450-mesh screen. As can be seen, this establishes an intermediate particle size screen between the submicron-level sieving device 2 and the primary sieving device 1. After large particles are removed, the powder falls onto the screen of the micron-level sieving device 9, thus trapping the powder between the micron-level and large particles. Only micron-level powder is allowed to pass through the sieve holes and fall onto the screen of the submicron-level sieving device 2 for submicron sieving. This buffer structure enables finer particle sieving and effectively avoids interference from larger particles, further improving sieving efficiency. Of course, this is only a preferred solution. When the micron-level sieving device 9 is not needed, it can be quickly disassembled, and the submicron-level sieving device 2 and the primary sieving device 1 can be connected. Furthermore, more sieving devices can be installed between the submicron-level sieving device 2 and the primary sieving device 1 as needed; there are no limitations here. Further details can be found in the references provided. Figure 1The micron-level sieving device 9 can also be connected to the ultrasonic generator 4, which can simultaneously provide ultrasonic vibration to the micron-level sieving device 9. This allows the powder on its surface to undergo the synergistic effect of mechanical vibration and ultrasonic vibration, resulting in better powder dispersion and higher sieving efficiency. Furthermore, the side of the micron-level sieving device 9 can be provided with an on / off micron-level sieving outlet 91. When it is necessary to discharge the powder on the screen, the micron-level sieving outlet 91 can be opened. After the powder discharge is complete, the micron-level sieving outlet 91 can be closed. The opening and closing can be completed by an electric valve. This process can be completed using automated equipment to improve production efficiency. In actual production, the powder sieved by the micron-level sieving device 9 can also be directly discharged from the micron-level sieving outlet 91 for high-temperature calcination or other treatments. It can be seen that, in this case, the equipment can be used for overall submicron sieving and impurity removal, as well as micron-level sieving and impurity removal, forming a modular, detachable, and flexibly combinable device.
[0036] In another specific embodiment of the above-mentioned powder material screening and impurity removal equipment, please continue to refer to... Figure 1 The large particle screening component 1 can be provided with a switchable large particle screening outlet 11 on the side. In order to ensure the cleanliness of the screen surface and continuous screening capacity, large particles on the screen can be discharged from here. It can also be done by an electric valve to improve automation efficiency.
[0037] In another specific embodiment of the above-mentioned powder material screening and impurity removal equipment, a switchable submicron screening outlet 21 can be opened at the bottom of the submicron screening device 2. In this way, the screened submicron powder can fall from this submicron screening outlet 21 and enter the impurity removal device 6 for further impurity removal. The powder on the screen can flow out through the submicron side outlet 22, which can also be accomplished by using an electric valve to improve production efficiency.
[0038] In a preferred embodiment of the powder material screening and impurity removal equipment described above, it may further include a baffle with through holes corresponding to each layer of magnetic rod mesh. The magnetic rods pass through the through holes, and the magnetic rods are in close contact with the through holes through a sealing jacket. Each layer of magnetic rod mesh is fixed in a drawer, which is connected to a pneumatic pipeline. This pneumatic pipeline is used to drive the drawer out and move the magnetic rods relative to the baffle to scrape off the impurities adsorbed on the surface of the magnetic rods. A removal container is also provided at the bottom of the magnetic rod mesh, and the scraped-off impurities can enter the removal container. The outlet 61 of the removal container is opened. The front or side of the impurity removal device 6 can accommodate the scraped-off impurities, achieving separation of powder and impurities. When the outlet is opened, the impurities can exit through this outlet. It can be seen that by adopting this structure, impurities can be effectively separated and will not fall into the final powder due to excessive accumulation on the surface of the magnetic rod, causing contamination. It should be noted that the material of the sealing jacket can be nylon, polyurethane, or polytetrafluoroethylene, etc., to ensure tight contact, so that impurities can be scraped off after moving to the sealing jacket. Of course, these can be selected according to actual needs and are not limited here.
[0039] In summary, the aforementioned powder material screening and impurity removal equipment can effectively improve the processing efficiency and accuracy of screening and impurity removal processes. It can screen out powders at the submicron or nanoscale. Due to the constant screening and feeding speed, the powder and magnetic rod can make full contact during the iron removal process, which is conducive to achieving a more thorough and complete removal of iron impurities and improving powder purity. Moreover, the entire process from screening to discharge can be automated, reducing manual intervention and improving production efficiency. This integrated equipment combines screening and impurity removal functions, which can save equipment space and reduce equipment manufacturing costs. It can also easily replace screens of different mesh sizes to perform corresponding grading screening according to different needs.
[0040] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A powder material screening and impurity removal device, characterized in that, include: A primary screening device, comprising a primary screen; A submicron-level screening device is disposed below the primary screening device and has a submicron-level screen. A vibration generating device is connected to the submicron-level screening device to provide it with mechanical vibration; An ultrasonic generator is connected to the submicron-level sieving device to provide ultrasonic vibration thereon; An electrostatic generator is connected to the submicron-level sieving device to provide it with an electrostatic field; The impurity removal device is disposed below the submicron level screening device and includes at least three layers of magnetic rod mesh.
2. The powder material screening and impurity removal equipment according to claim 1, characterized in that, The submicron-level screen is a detachable 500-mesh to 1500-mesh screen.
3. The powder material screening and impurity removal equipment according to claim 2, characterized in that, The primary screening device includes a large particle screening component, which has a detachable 50-mesh to 200-mesh screen.
4. The powder material screening and impurity removal equipment according to claim 3, characterized in that, It also includes a micron-level screening device disposed between the submicron-level screening device and the primary screening device, the micron-level screening device having a detachable 250-mesh to 450-mesh screen.
5. The powder material screening and impurity removal equipment according to claim 4, characterized in that, The micron-level sieving device is also connected to the ultrasonic generator.
6. The powder material screening and impurity removal equipment according to claim 5, characterized in that, The micron-level sieving device has a switchable micron-level sieving outlet on its side.
7. The powder material screening and impurity removal equipment according to claim 3, characterized in that, The large particle screening component has an openable large particle screening outlet on its side.
8. The powder material screening and impurity removal equipment according to any one of claims 1-7, characterized in that, The magnetic rods in the magnetic rod grid are electromagnetic or permanent magnetic rods with a diameter of 2 to 3 centimeters and a magnetic force greater than 14,000 gauss. The spacing between adjacent magnetic rods is greater than the diameter of the magnetic rods. The two adjacent layers of magnetic rod grids are parallel to each other and are staggered in the horizontal direction.
9. The powder material screening and impurity removal equipment according to claim 8, characterized in that, It also includes a baffle with through holes corresponding to each layer of the magnetic rod grid. The magnetic rod passes through the through holes and is in close contact with the through holes through a sealing sleeve. Each layer of the magnetic rod grid is fixed in a drawer. The drawer is connected to a pneumatic pipeline. The pneumatic pipeline is used to drive the drawer out and move the magnetic rod relative to the baffle to scrape off the impurities adsorbed on the surface of the magnetic rod. A cleaning container is also provided at the bottom of the magnetic rod grid. The outlet of the cleaning container is opened on the side of the cleaning device and can accommodate the scraped-off impurities to achieve the separation of powder and impurities.
10. The powder material screening and impurity removal equipment according to any one of claims 1-7, characterized in that, The submicron-level screening device has a switchable submicron-level screening outlet at the bottom.