Superfine powder screening device
By using a warm air dryer, a motor-driven slider and a high-pressure nozzle to clean the screen pores, and a crushing module for pretreatment, the problem of screen clogging and reduced precision caused by the small particle size and easy agglomeration in traditional ultrafine powder screening devices has been solved, achieving efficient and accurate screening results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN HAIBORUI SILICON MATERIAL TECH CO LTD
- Filing Date
- 2025-04-21
- Publication Date
- 2026-04-10
AI Technical Summary
Traditional ultrafine powder sieving devices suffer from high screen clogging rates and reduced sieving accuracy due to the extremely small particle size, high surface energy, and tendency to agglomerate. They are particularly ineffective when processing submicron or nanoparticles.
The material is dried using a warm air blower. The motor drives the threaded rod to move the slider and high-pressure nozzle laterally along the screen. The high-pressure airflow cleans the screen holes, and the material is pre-treated by the crushing module to reduce the particle size. The centrifugal force is then used to achieve efficient screening.
It effectively prevents screen clogging, improves screening accuracy, ensures the uniformity and batch stability of ultrafine powder, and enhances screening efficiency.
Smart Images
Figure CN224101152U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to powder screening technical field especially relates to a screening device of superfine powder. BACKGROUND
[0002] Superfine powder refers to the particle material of usually micron or nanometer level, has high specific surface area, strong adsorption, excellent catalytic activity and special physical and chemical properties, is widely used in material science, chemical industry, medicine and new energy etc. Because superfine powder is easy to agglomerate due to too high surface energy in preparation and storage process, and different particle sizes may affect the performance consistency of the final product, therefore, when using, the agglomerates need to be dispersed, the particle size distribution needs to be controlled and the impurities need to be removed through screening process. Screening not only can ensure the uniformity and batch stability of particles, but also can optimize the functional performance of materials in specific applications, and is the key pretreatment step to improve the application efficiency of superfine powder.
[0003] The traditional superfine powder screening device mainly screens through the screen mesh, mechanical vibration, air flow and centrifugal force. The mechanical vibration screening relies on the vibration motor and other components to drive the screen mesh to produce different forms of vibration, so that the materials move on the screen mesh, and the superfine powder smaller than the screen hole can pass through the screen mesh. The air flow screening utilizes air as carrier to diffuse the materials in the air flow, and realizes screening by means of the centrifugal force generated by the wind wheel blades. The centrifugal force screening makes the materials do circular motion to generate centrifugal force, so that the fine particles close to the screen hole size are separated in the motion.
[0004] The superfine powder of the traditional superfine powder screening device is easy to agglomerate due to too small particle size and high surface energy, and is adhered to the screen mesh pores in the screening process due to electrostatic adsorption or van der waals force, which leads to high screen mesh clogging rate. When separating nanometer particles or distinguishing the powder with small particle size difference, especially when processing submicron or nanometer particles, the screening precision is greatly reduced. UTILITY MODEL CONTENTS
[0005] In order to make up for the above shortcomings, the utility model provides a screening device of superfine powder, which aims at improving the problems that the superfine powder is easy to agglomerate due to too small particle size and high surface energy, is adhered to the screen mesh pores in the screening process in the traditional equipment, leads to high screen mesh clogging rate, and the screening precision is greatly reduced when processing submicron or nanometer particles.
[0006] In order to achieve the above purpose, the utility model provides the following technical scheme: a screening device of superfine powder, which comprises a base, a fixed column is fixedly connected to the top of the base, a screening box is fixedly connected to the top of the base, a screen mesh is arranged in the screening box, and a anti-blocking assembly is arranged in the screening box.
[0007] The anti-blocking assembly comprises a motor two, the motor two is fixedly connected in the screening box, a fixed block two is fixedly connected to the outer wall of the motor two, a threaded rod is arranged at the output end of the motor two, a fixed block one is rotatably connected to one end of the threaded rod, a sliding block is threadedly connected to the outer wall of the threaded rod, a hose is fixedly connected to the outer wall of the sliding block, a high-pressure nozzle is fixedly connected to one end of the hose, and a fan is fixedly connected to the other end of the hose.
[0008] Further, the drying assembly comprises a hair dryer, the hair dryer is arranged on the upper surface of the base, the output end of the hair dryer is fixedly connected with an air outlet pipe, and one end of the air outlet pipe is fixedly connected with a feeding pipe.
[0009] Further, one end of the fixed column is provided with a motor one, the output end of the motor one is fixedly connected with a transmission shaft one, one end of the transmission shaft one is provided with a pretreatment box, the outer wall of the transmission shaft one is provided with a crushing module, the top of the pretreatment box is provided with a feeding box, the bottom of the pretreatment box is provided with a feeding pipe, one end of the feeding pipe is fixedly connected with a conveying pipe, one side of the outer wall of the conveying pipe is provided with a belt, one end of the belt is provided with a transmission shaft two, the other end of the belt is arranged on the outer wall of the transmission shaft one, and the outer wall of the transmission shaft two is provided with helical blades.
[0010] Further, the helical blades are arranged in the conveying pipe and used for conveying pretreated materials.
[0011] Further, the base is internally provided with a fine powder discharging pipe, one end of the fine powder discharging pipe is provided with a fine powder collecting box, one side of the outer wall of the base is provided with a coarse powder discharging pipe, one end of the coarse powder discharging pipe is provided with a coarse powder collecting box, the outer wall of the screening box is fixedly connected with the fine powder discharging pipe and the coarse powder discharging pipe, and the fine powder discharging pipe and the coarse powder discharging pipe are arranged at the bottom of the screening box.
[0012] Further, the outer wall of the fixed block one and the fixed block two is fixedly connected to the inner wall of the screening box.
[0013] Further, the crushing module is arranged in the pretreatment box and used for crushing and pretreating materials.
[0014] Further, the transmission shaft two is arranged in the screen and used for driving the screen to rotate to screen materials.
[0015] The utility model has the advantages of the following beneficial effects:
[0016] 1. In the utility model, the material after pretreatment is dried by the air heater through the air outlet pipe, the sliding block with the high pressure nozzle is moved along the screen mesh transversely and reciprocatingly by the motor extension driving the screw rod rotation, the fan delivers high pressure airflow from the high pressure nozzle, and the screen mesh aperture is cleaned in real time, so that the traditional equipment in the screening process is adhered to the screen mesh aperture, the screen mesh is blocked, the high efficient cleaning screen mesh effect is reached.
[0017] 2. In the utility model, the driving motor drives the driving crushing module to rotate at high speed, the crushing module pretreats the material, and the large block agglomerates are crushed, so that the material particle size is reduced to the screening adaptation range, the powder after crushing is entered into the conveying pipeline through the bottom feeding pipeline, the traditional equipment in the processing of submicron or nanometer particles is solved, the screening precision is reduced, and the high efficient screening effect is reached. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 A three-dimensional structure schematic view of the screening device of the superfine powder is provided for the utility model;
[0019] Figure 2 A screening box internal structure schematic view of the screening device of the superfine powder is provided for the utility model;
[0020] Figure 3 A conveying channel internal structure schematic view of the screening device of the superfine powder is provided for the utility model.
[0021] LEGEND:
[0022] 1, base; 2, screening box; 3, motor one; 4, fixed column; 5, feeding box; 6, pretreatment box; 7, feeding pipeline; 8, transmission shaft one; 9, belt; 10, transmission shaft two; 11, air heater; 12, air outlet pipe; 13, fine powder discharge pipeline; 14, coarse powder discharge pipeline; 15, fine powder collection box; 16, coarse powder collection box; 17, fan; 18, hose; 19, screen mesh; 20, motor two; 21, screw rod; 22, fixed block one; 23, sliding block; 24, high pressure nozzle; 25, fixed block two; 26, spiral blade; 27, crushing module; 28, conveying pipeline. DETAILED DESCRIPTION
[0023] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.
[0024] REFERENCEFigure 1 Figure 3 The utility model provides an embodiment: a kind of screening device of superfine powder, including base 1, fixedly connected with fixed column 4 in base 1 top, fixed column 4 is used to fix motor one 3, fixedly connected with screening box 2 in base 1 top, screening box 2 inside is provided with screen 19, screen 19 is used to screen material, screening box 2 inside is provided with anti-blocking subassembly;
[0025] Anti-blocking subassembly includes motor two 20, motor two 20 is fixedly connected in screening box 2 inside, fixed block two 25 is fixedly connected on the outer wall of motor two 20, screw rod 21 is provided at the output of motor two 20, one end of screw rod 21 is rotatably connected with fixed block one 22, and the outer wall of screw rod 21 is threadedly connected with sliding block 23, and motor two 20 is used to drive screw rod 21 to rotate to drive sliding block 23 to slide left and right, and the outer wall of sliding block 23 is fixedly connected with hose 18, one end of hose 18 is fixedly connected with high-pressure nozzle 24, the other end of hose 18 is fixedly connected with fan 17, and fan 17 is used to form directional airflow by gas supply to high-pressure nozzle 24 through hose 18, and the pore of screen 19 is cleaned in real time to prevent blockage, and the upper surface of base 1 is provided with drying assembly, and the drying assembly includes hair dryer 11, and hair dryer 11 is arranged on the upper surface of base 1, and the output of hair dryer 11 is fixedly connected with air outlet pipe 12, and one end of air outlet pipe 12 is fixedly connected with feeding pipe 7, and hair dryer 11 is used to dry the processed material through air outlet pipe 12, to prevent material from caking.
[0026] Specifically, the material after pretreatment enters the conveying pipe 28 through the feeding pipe 7, in the conveying stage, the hair dryer 11 continuously blows hot air into the feeding pipe 7 through the air outlet pipe 12, the hot air uniformly wraps the powder particles, evaporates the residual moisture and destroys the electrostatic adsorption, effectively inhibits the caking phenomenon, ensures that the material enters the subsequent process in a loose state, after entering the screening box 2, the transmission shaft two 10 drives the screen 19 to rotate at a high speed with an adjustable rotating speed through the belt 9 and the motor one 3 linkage, forms a centrifugal field, and the fine powder rapidly passes through the screen under the combined action of gravity and centrifugal force, at the same time, the output end of the motor two 20 drives the screw rod 21 to periodically reverse rotation through the fixed block two 25 and the rigidity connection of the screening box 2, drives the sliding block 23 to move reciprocatingly along the axial direction of the screw rod 21, the fan 17 continuously supplies high-pressure airflow to the high-pressure nozzle 24 through the hose 18, forms a fan-shaped air curtain, and the rotating screen 19 performs full-coverage scanning type impact, reversely blows away the coarse particles embedded in the mesh hole, and synchronously removes the attached powder.
[0027] Refer to Figure 1 Figure 3 , the motor one 3 output end is fixedly connected with a transmission shaft one 8, the transmission shaft one 8 one end is provided with a pretreatment box 6, the transmission shaft one 8 outer wall is provided with a broken module 27, the pretreatment box 6 top is provided with a feed tank 5, the pretreatment box 6 is used to pre-crush material, avoid big block material screening when blocking screen 19, the pretreatment box 6 bottom is provided with a feeding pipe 7, the feeding pipe 7 is used to transport pretreated material, the feeding pipe 7 one end is fixedly connected with a conveying pipe 28, the conveying pipe 28 outer wall one side is provided with a belt 9, the belt 9 one end is provided with a transmission shaft two 10, the belt 9 other end is provided on the transmission shaft one 8 outer wall, the belt 9 is used to drive the transmission shaft two 10 rotation, the transmission shaft two 10 outer wall is provided with a spiral blade 26, the spiral blade 26 is arranged inside the conveying pipe 28, for conveying pretreated material, the base 1 inside is provided with a fine powder discharge pipe 13, the fine powder discharge pipe 13 one end is provided with a fine powder collecting tank 15, the base 1 outer wall one side is provided with a coarse powder discharge pipe 14, the coarse powder discharge pipe 14 one end is provided with a coarse powder collecting tank 16, the screen box 2 outer wall is fixedly connected with the fine powder discharge pipe 13 and the coarse powder discharge pipe 14, the fine powder discharge pipe 13 and the coarse powder discharge pipe 14 are all arranged in the screen box 2 bottom, the fixed block one 22 and the fixed block two 25 outer wall one side are all fixedly connected in the screen box 2 inner wall, the broken module 27 is arranged inside the pretreatment box 6, for crushing pretreatment of material, the transmission shaft two 10 is arranged inside the screen 19, for driving the screen 19 rotation to screen material.
[0028] Specifically, after the material falls into the pretreatment box 6 from the feed tank 5, the motor one 3 drives the broken module 27 to rotate at high speed through the transmission shaft one 8, the broken module 27 coarsely crushes the material, breaks the big block agglomerate, and reduces the particle size of the material to the screening adaptation range, the broken powder enters the conveying pipe 28 through the bottom feeding pipe 7, the transmission shaft two 10 is driven by the motor one 3 through the belt 9 and shunt transmission, drives the spiral blade 26 to rotate, the spiral blade 26 adopts variable pitch design, which prevents the inlet material from accumulating, and ensures uniform discharge at the outlet, the screened material slides into the fine powder collecting tank 15 through the fine powder discharge pipe 13 at the bottom of the screen box 2; the coarse powder is thrown to the edge along the screen 19 slope under the action of centrifugal force, and enters the coarse powder collecting tank 16 through the coarse powder discharge pipe 14.
[0029] Working principle: when the material through the feed box 5 into the pretreatment box 6, start motor 3, driven by motor 3 8 drive shaft 1 to 27 broken module material pre-pulverized, avoid large block material screening when the screen 19, the processed material into the conveying pipeline 7 pipeline 28, at this time start the air heater 11, air heater 11 through the air pipe 12 on the processed material drying, prevent material caking, after the belt 9 will drive shaft 2 10 rotation, thus driving screw blade 26 rotation, push material forward, material into the screening box 2, drive shaft 2 10 drive screen 19 rotation, under high speed rotation, the material is screened into coarse powder and fine powder, fine powder through the fine powder discharge pipeline 13 into the fine powder collection box 15, coarse powder through the coarse powder discharge pipeline 14 into the coarse powder collection box 16, realize the fine screening of powder, screening process through the motor 2 20 drive screw rod 21, make the slider 23 drive high pressure nozzle 24 along the screen 19 transverse movement, while the fan 17 through the hose 18 to high pressure nozzle 24 gas supply directional airflow, real-time cleaning screen 19 pore prevent clogging.
[0030] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the foregoing detailed description of the present application, for the skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included in the scope of the present application.
Claims
1. A sieving device for ultrafine powder, comprising a base (1), characterized in that: The base (1) is fixedly connected to a fixed column (4) at the top, and a screening box (2) is fixedly connected to the top of the base (1). A screen (19) is provided inside the screening box (2), and an anti-blocking component is provided inside the screening box (2). The anti-clogging component includes a second motor (20), which is fixedly connected inside the screening box (2). A second fixing block (25) is fixedly connected to the outer wall of the second motor (20). A threaded rod (21) is provided at the output end of the second motor (20). A first fixing block (22) is rotatably connected to one end of the threaded rod (21). A slider (23) is threadedly connected to the outer wall of the threaded rod (21). A hose (18) is fixedly connected to the outer wall of the slider (23). A high-pressure nozzle (24) is fixedly connected to one end of the hose (18). A fan (17) is fixedly connected to the other end of the hose (18). A drying component is provided on the upper surface of the base (1).
2. The sieving device for ultrafine powder according to claim 1, characterized in that: The drying assembly includes a heater (11), which is mounted on the upper surface of the base (1). The output end of the heater (11) is fixedly connected to an air outlet pipe (12), and one end of the air outlet pipe (12) is fixedly connected to a feeding pipe (7).
3. The sieving device for ultrafine powder according to claim 1, characterized in that: One end of the fixed column (4) is provided with a motor (3), and the output end of the motor (3) is fixedly connected to a transmission shaft (8). One end of the transmission shaft (8) is provided with a pretreatment box (6), and the outer wall of the transmission shaft (8) is provided with a crushing module (27). The top of the pretreatment box (6) is provided with a feeding box (5), and the bottom of the pretreatment box (6) is provided with a feeding pipe (7). One end of the feeding pipe (7) is fixedly connected to a conveying pipe (28), and one side of the outer wall of the conveying pipe (28) is provided with a belt (9). One end of the belt (9) is provided with a transmission shaft (10), and the other end of the belt (9) is provided on the outer wall of the transmission shaft (8). The outer wall of the transmission shaft (10) is provided with a spiral blade (26).
4. The sieving device for ultrafine powder according to claim 3, characterized in that: The spiral blades (26) are disposed inside the conveying pipe (28) for conveying pre-treated materials.
5. The sieving device for ultrafine powder according to claim 1, characterized in that: The base (1) is provided with a fine powder discharge pipe (13) inside. A fine powder collection box (15) is provided at one end of the fine powder discharge pipe (13). A coarse powder discharge pipe (14) is provided on one side of the outer wall of the base (1). A coarse powder collection box (16) is provided at one end of the coarse powder discharge pipe (14). The fine powder discharge pipe (13) and the coarse powder discharge pipe (14) are fixedly connected to the outer wall of the screening box (2). Both the fine powder discharge pipe (13) and the coarse powder discharge pipe (14) are located at the bottom of the screening box (2).
6. The sieving device for ultrafine powder according to claim 1, characterized in that: The outer side of both the first fixed block (22) and the second fixed block (25) are fixedly connected to the inner wall of the screening box (2).
7. The sieving device for ultrafine powder according to claim 3, characterized in that: The crushing module (27) is installed inside the pretreatment box (6) and is used to crush and pretreat the material.
8. The sieving device for ultrafine powder according to claim 3, characterized in that: The second drive shaft (10) is located inside the screen (19) and is used to drive the screen (19) to rotate and screen the material.