Powder filtering and grading device

Abstract

A powder filtering and grading device comprises a tank body, a containing cavity used for containing a driving assembly and a stirring assembly is formed in the tank body, the stirring assembly comprises a fixing plate, the fixing plate is provided with an inner-ring filtering pipe and an outer-ring filtering pipe which are spirally arranged in a sleeved mode, the inner-ring filtering pipe is communicated with an inner-ring vacuum opening, and the outer-ring filtering pipe is communicated with an outer-ring vacuum opening. The inner-ring filter pipe is communicated with an inner-ring vacuum port, the outer-ring filter pipe is communicated with an outer-ring vacuum port, the inner-ring vacuum port and the outer-ring vacuum port are communicated with an inner-ring compressed air port and an outer-ring compressed air port respectively, the stirring assembly further comprises a driving rod connected with the driving assembly, and the driving rod penetrates through the inner-ring filter pipe and the outer-ring filter pipe to be connected with stirring blades. The traditional particle sedimentation grading depends on gravity and is slow in speed, while the device realizes active particle screening and stripping by arranging the filter pipes on the inner ring and the outer ring and cooperating with the alternate action of the vacuum port and the compressed air port, so that the grading speed and efficiency are remarkably improved.

Description

Technical Field

[0001] This utility model relates to a powder filtration and grading device, belonging to the field of chemical reaction vessel equipment. Background Technology

[0002] Powder material classification is very common in industrial production, such as in mining, chemical, and pharmaceutical industries. The purpose of powder classification is mainly to separate powders into different grades based on particle size and shape to meet different process requirements or product quality requirements.

[0003] Particle separation in liquids based on differences in settling velocity is a classic separation technique based on fluid dynamics principles, widely used in mineral processing, chemical engineering, environmental protection, and other fields. Particles of different sizes or densities settle to different positions within a specific timeframe due to differences in settling velocity, thus achieving separation.

[0004] However, relying on the settling speed of the particles themselves due to gravity for classification is slow and affects production efficiency. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings and deficiencies of the existing technology and to provide a powder filtration and grading device.

[0006] A powder filtration and grading device includes a tank with a cavity for accommodating a drive assembly and a stirring assembly. The stirring assembly includes a fixed plate with an inner and outer ring filter tube arranged in a spiral pattern. The inner ring filter tube is connected to an inner vacuum port, and the outer ring filter tube is connected to an outer vacuum port. The inner and outer vacuum ports are respectively connected to an inner and an outer compressed air port. The stirring assembly also includes a drive rod connected to the drive assembly, which passes through the inner and outer filter tubes and is connected to stirring blades. Traditional particle sedimentation and grading relies on gravity, which is slow. This device, by setting up inner and outer ring filter tubes and coordinating the alternating action of the vacuum port and compressed air port, achieves active particle screening and separation, significantly improving the grading speed and efficiency. This device integrates the drive assembly, stirring assembly, and filtration system into a single tank structure, resulting in a compact structure that is easy to install and maintain, and is suitable for continuous or automated production processes.

[0007] Preferably, the inner and outer filter tubes are stainless steel powder sintered filter elements and are not interconnected. Using stainless steel powder sintered filter elements as the material for the inner and outer filter tubes provides advantages such as high strength, corrosion resistance, high temperature resistance, and wear resistance, enabling long-term stable operation in various complex media environments and significantly improving the service life and reliability of the device.

[0008] Preferably, the fixed plate is also provided with a powder inlet and an exhaust port communicating with the cavity. By providing a powder inlet communicating with the cavity on the fixed plate, continuous or quantitative feeding of powder raw materials can be achieved without frequent opening of the tank, thus improving the automation level and operating efficiency of the equipment. The exhaust port can release excess gas in the cavity or bubbles generated during stirring in a timely manner, maintaining stable air pressure in the system, which helps the filter components to work normally and avoids filter tube blockage or reduced classification efficiency due to gas retention.

[0009] Preferably, the drive assembly includes a motor fixedly mounted on a fixed plate, with the end of the drive rod passing through the fixed rod and fixedly connected to the motor. The drive assembly, using a motor fixedly mounted on the fixed plate, provides stable and continuous power output to the stirring assembly, ensuring thorough mixing and dispersion of particles in the liquid, and contributing to the efficient classification process. By selecting a suitable motor (such as one with a frequency converter or servo motor), the stirring speed can be adjusted to adapt to different powder concentrations and classification conditions, enhancing the adaptability and intelligent control capabilities of the device.

[0010] Preferably, the tank body has a water inlet communicating with the cavity on its upper side, and a discharge outlet communicating with the cavity on its bottom. The water inlet on the upper side of the tank body facilitates the rapid injection of a liquid medium (such as water or other classification liquids) before classification, ensuring a suitable classification environment within the entire cavity, which is beneficial for continuous operation and rapid switching of the process flow. The discharge outlet at the bottom facilitates the rapid discharge of classified powder or residue, reducing retention within the tank, improving equipment turnover efficiency, and simultaneously reducing the frequency of manual cleaning and operational burden.

[0011] Furthermore, vertical ultrasonic bars extending into the cavity are provided on both sides of the tank. By installing vertical ultrasonic bars on both sides of the tank, ultrasonic energy can be continuously released into the liquid in the cavity during the classification process, effectively breaking up powder agglomeration, improving the uniformity of particle distribution, and promoting sedimentation and filtration effects. Ultrasonic disturbance can break up the boundary layer formed in the liquid, preventing fine particles from being difficult to separate due to surface tension or electrostatic adsorption, thereby improving the classification accuracy of micron-sized and even submicron-sized particles.

[0012] Preferably, the fixing plate is used to seal the cavity and is fixedly connected to the tank body via a fixing device. The fixing plate seals the cavity, effectively preventing powder or liquid leakage and ensuring the stability of the internal environment. This is especially important during stirring, filtration, and vacuum / compressed air operation, ensuring good system sealing performance and avoiding material loss and contamination risks. The detachable connection between the fixing plate and the tank body via the fixing device makes cleaning and replacing internal components (such as filter elements and stirring blades) more efficient and convenient, reducing maintenance difficulty and improving operation and maintenance efficiency.

[0013] Furthermore, the retainer is fastened to both sides of the fixing plate and the tank body, and is fixedly connected to the fixing plate and the tank body by bolts. The bolted connection of the retainer allows for simple and quick assembly and disassembly, enabling users to quickly open the fixing plate for cleaning, maintenance, or component replacement, improving equipment operating efficiency and user experience. The snap-fit ​​structure combined with bolt fastening ensures a tight seal and accurate alignment between the fixing plate and the tank body, effectively preventing leakage, air leakage, or loose connections caused by misalignment or gaps.

[0014] The beneficial effects of this invention are as follows: First, with the inner and outer vacuum ports closed, compressed air is introduced into the tank through the inner and outer filter tubes via the inner and outer compressed air ports, enabling rapid dispersion of powder in water under the action of pneumatic stirring, mechanical stirring, and ultrasonic force. Second, after mechanical stirring and ultrasonic force cease, the introduced compressed air prevents coarse particles from adhering to the inner and outer filter tubes. Third, after pneumatic stirring, mechanical stirring, and ultrasonic force cease, the inner and outer compressed air ports close, and the inner and outer vacuum ports open. When water is discharged from the tank using vacuum, small powder particles are quickly adsorbed onto the surface of the inner and outer filter tubes. Through these methods, powder filtration and grading are achieved. Attached Figure Description

[0015] 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 some embodiments of this utility model. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of this utility model.

[0016] Figure 1 This is a structural diagram of the main body of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0018] Figure 3 This is a cross-sectional view of the present invention;

[0019] In the diagram, 1. Fixed plate; 2. Outer ring vacuum port; 3. Outer ring compressed air port; 4. Inner ring vacuum port; 5. Inner ring compressed air port; 6. Exhaust port; 7. Outer ring filter pipe; 8. Inner ring filter pipe; 9. Powder feed port; 10. Motor; 11. Drive rod; 12. Stirring blade; 13. Tank body; 14. Water inlet; 15. Vertical ultrasonic rod; 16. Discharge port; 17. Fixing device; 18. Chamber. Detailed Implementation

[0020] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.

[0021] It should be noted that all uses of "first" and "second" in the embodiments of this utility model are for the purpose of distinguishing two entities or parameters with the same name but different names. It is clear that "first" and "second" are only for the convenience of expression and should not be construed as limiting the embodiments of this utility model. Subsequent embodiments will not explain this in detail.

[0022] The directional and positional terms used in this utility model, such as "up," "down," "front," "back," "left," "right," "inner," "outer," "top," "bottom," and "side," are merely for reference to the accompanying drawings. Therefore, the directional and positional terms used are for the purpose of explaining and understanding this utility model, and not for limiting the scope of protection of this utility model.

[0023] like Figure 1-3 The diagram illustrates an embodiment of a powder filtration and grading device according to this invention. It includes a tank 13, within which a cavity 18 is provided for accommodating a drive assembly and a stirring assembly. The stirring assembly includes a fixed plate 1, on which are spirally arranged inner and outer ring filter tubes 8 and 7. The inner ring filter tube 8 is connected to an inner ring vacuum port 4, and the outer ring filter tube 7 is connected to an outer ring vacuum port 2. The inner and outer ring vacuum ports 4 and 2 are respectively connected to an inner and outer ring compressed air port 5 and an outer ring compressed air port 3. The stirring assembly also includes a drive rod 11 connected to the drive assembly. The drive rod 11 passes through the inner and outer ring filter tubes 8 and is connected to stirring blades 12. Traditional particle sedimentation and grading relies on gravity, which is slow. This device, by setting inner and outer ring filter tubes and coordinating the alternating action of the vacuum port and compressed air port, achieves active particle screening and separation, significantly improving the grading speed and efficiency. The device integrates the drive assembly, stirring assembly, and filtration system into a single tank 13 structure, which is compact, easy to install and maintain, and suitable for continuous or automated production processes.

[0024] The inner ring filter tube 8 and the outer ring filter tube 7 are stainless steel powder sintered filter elements and are not interconnected. Using stainless steel powder sintered filter elements as the material for the inner and outer ring filter tubes 7 has advantages such as high strength, corrosion resistance, high temperature resistance, and wear resistance. It can work stably for a long time in various complex media environments, significantly improving the service life and reliability of the device.

[0025] Preferably, the fixed plate 1 is further provided with a powder inlet 9 and an exhaust port 6 communicating with the cavity 18. By providing the powder inlet 9 communicating with the cavity 18 on the fixed plate 1, continuous or quantitative feeding of powder raw materials can be achieved without frequently opening the tank 13, thus improving the automation level and operating efficiency of the equipment. The exhaust port 6 can release excess gas or bubbles generated during stirring in the cavity 18 in a timely manner, maintaining stable air pressure in the system, which helps the filter components to work normally and avoids filter tube blockage or reduction in classification efficiency due to gas retention.

[0026] The drive assembly includes a motor 10 fixedly mounted on a fixed plate 1, with the end of the drive rod 11 passing through the fixed rod and fixedly connected to the motor 10. The drive assembly, using a motor 10 fixedly mounted on the fixed plate 1, provides a stable and continuous power output to the stirring assembly, ensuring thorough mixing and dispersion of particles in the liquid, and contributing to the efficient classification process. By selecting a suitable motor 10 (such as one with a frequency converter or a servo motor 10), the stirring speed can be adjusted to adapt to different powder concentrations and classification conditions, enhancing the adaptability and intelligent control capabilities of the device.

[0027] The tank body 13 has an inlet 14 on its upper side that communicates with the cavity 18, and an outlet 16 on its bottom that communicates with the cavity 18. The inlet 14 on the upper side of the tank body 13 facilitates the rapid injection of a liquid medium (such as water or other classification liquid) before classification, ensuring a suitable classification environment within the entire cavity 18, which is beneficial for continuous operation and rapid switching of the process. The outlet 16 at the bottom facilitates the rapid discharge of classified powder or residue, reducing residue buildup in the tank, improving equipment turnover efficiency, and reducing the frequency of manual cleaning and operational burden.

[0028] In this embodiment, unlike the previous embodiment, vertical ultrasonic rods 15 extending into the cavity 18 are provided on both sides of the tank 13. By providing vertical ultrasonic rods 15 on both sides of the tank 13, ultrasonic energy can be continuously released into the liquid in the cavity 18 during the classification process, effectively breaking up powder agglomeration, improving the uniformity of particle distribution, and promoting sedimentation and filtration effects. Ultrasonic disturbance can break up the boundary layer formed in the liquid, preventing fine particles from being difficult to separate due to surface tension or electrostatic adsorption, thereby improving the classification accuracy of micron-sized and even submicron-sized particles.

[0029] The fixing plate 1 is used to seal the cavity 18 and is fixedly connected to the tank body 13 via a fixing device 17. The fixing plate 1 effectively prevents powder or liquid leakage from the cavity 18, ensuring the stability of the internal environment. Especially during stirring, filtering, and vacuum / compressed air operation, it ensures good system sealing performance and avoids material loss and contamination risks. The fixing plate 1 is detachably connected to the tank body 13 via the fixing device 17, making cleaning and replacement of internal components (such as filter elements and stirring blades 12) more efficient and convenient, reducing maintenance difficulty and improving operation and maintenance efficiency.

[0030] The fastener 17 is fastened to both sides of the fixing plate 1 and the tank body 13, and is fixedly connected to the fixing plate 1 and the tank body 13 by bolts. The bolted connection of the fastener 17 allows for simple and quick assembly and disassembly, enabling users to quickly open the fixing plate 1 for cleaning, maintenance, or component replacement, improving equipment operating efficiency and user experience. The fastening structure combined with bolt tightening ensures a tight seal and accurate alignment between the fixing plate 1 and the tank body 13, effectively preventing leakage, air leakage, or loose connections caused by misalignment or gaps. The fastener 17 is made of stainless steel.

[0031] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

[0032] Although the present invention has been described with reference to several specific embodiments, it should be understood that the present invention is not limited to the specific embodiments disclosed. The present invention is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. A powder filtration classification apparatus, characterized by: The device includes a tank body with a cavity for accommodating a drive assembly and a stirring assembly. The stirring assembly includes a fixed plate with an inner and outer ring filter tube spirally arranged on the fixed plate. The inner ring filter tube is connected to an inner ring vacuum port, and the outer ring filter tube is connected to an outer ring vacuum port. The inner and outer ring vacuum ports are respectively connected to an inner and an outer ring compressed air port. The stirring assembly also includes a drive rod connected to the drive assembly, which passes through the inner and outer ring filter tubes and is connected to stirring blades.

2. The powder filtering and classifying apparatus according to claim 1, wherein: The inner and outer filter tubes are stainless steel powder sintered filter elements and are not connected to each other.

3. The powder filtering and classifying apparatus according to claim 1, wherein: The fixed plate is also provided with a powder inlet and an exhaust outlet that communicate with the cavity.

4. The powder filtering / classifying apparatus according to claim 1, wherein: The drive assembly includes a motor fixedly mounted on a fixed plate, and the end of the drive rod passes through the fixed rod and is fixedly connected to the motor.

5. The powder filtering and classifying apparatus according to claim 1, wherein: The upper side of the tank is provided with a water inlet communicating with the cavity, and the bottom of the tank is provided with a discharge outlet communicating with the cavity.

6. The powder filtration and grading device as described in claim 5, characterized in that: The tank body is equipped with vertical ultrasonic rods on both sides that extend into the cavity.

7. The powder filtering / classifying apparatus according to claim 1, wherein: The fixing plate is used to seal the cavity and is fixedly connected to the tank body by a fixing device.

8. The powder filtering and classifying apparatus according to claim 7, wherein: The fastener is fastened to the fixing plate and both sides of the tank body, and the fastener is fixedly connected to the fixing plate and the tank body by bolts.

Images