High-efficiency high-fineness powder concentrator

Abstract

The utility model relates to the technical field of powder selecting machines, in particular to an efficient high-fineness powder selecting machine which comprises a powder screening barrel, a feeding pipe is fixedly connected to the top end of the powder screening barrel, a discharging pipe is fixedly connected to the bottom end of the powder screening barrel, a screening assembly used for providing airflow to screen dust is arranged on the powder screening barrel, and a powder taking assembly is arranged on the powder screening barrel. Through cooperative arrangement of the first draught fan, the motor, the material scattering disc and other structures, during use, dust is placed on the material scattering disc, airflow is provided for the interior of the powder screening barrel through the screening assembly, meanwhile, the motor is started to evenly scatter the dust on the material scattering disc to the periphery, the dust scattering disc can scatter the dust on the powder screening barrel, and the dust scattering disc can scatter the dust on the powder screening barrel to the periphery. According to the dust collector provided by the utility model, the air flow is used for enabling fine powder in dust to rise under the rising force of the air flow, and then the fine powder is sucked into the powder storage barrel through the first fan, so that the problem of resource waste caused by incapability of ensuring that the fine powder discharged from the screening net enters the cyclone barrel and possibly enters the powder collector is avoided as much as possible.

Description

Technical Field

[0001] The present application relates to the technical field of powder classifiers, and in particular to a high-efficiency and high-fine powder classifier. Background Art

[0002] The powder classifier is a key piece of equipment in a powder production system. It uses the differences in the forces acting on particles of varying sizes in an air medium to classify powder particles. Its performance directly impacts the safety and economical operation of the entire system. The powder classifier is applicable to the grinding and ultrafine grinding of materials in industries such as cement, metallurgical slag, materials, and chemicals. Most fields require particle size classification of ground materials, also known as powder selection, to separate materials that meet the required particle size. This material size classification is accomplished by the powder classifier.

[0003] The utility model patent with announcement number CN217313944U proposes a high-speed and high-fine composite powder classifier, including a powder classifier, wherein the left and right sides of the outer surface of the powder classifier are fixedly connected to cyclones, and a fan is provided on the right side of the powder classifier.

[0004] One of the above-mentioned high-speed and high-fine composite powder classifiers uses a fan and a rotating component to allow fine powder to pass through the screening mesh into the cyclone under the action of airflow and centrifugation. However, the cyclone is connected to the powder classifier and there is a certain distance between it and the separation cylinder. When the separation cylinder rotates, it cannot be guaranteed that the fine powder coming out of the screening mesh enters the cyclone, and some of it may enter the powder classifier, resulting in a waste of resources. Utility Model Content

[0005] The purpose of the utility model is to solve or at least alleviate the problem of an existing high-speed and high-fine composite powder classifier, in which the fan and the rotating assembly allow the fine powder to pass through the screening mesh into the cyclone under the action of airflow and centrifugation, but the cyclone is connected to the powder classifier and there is a certain distance between the cyclone and the separation drum. When the separation drum rotates, it cannot be guaranteed that the fine powder coming out of the screening mesh enters the cyclone, and some of it may enter the powder classifier, resulting in a waste of resources.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A high-efficiency and high-fine powder classifier comprises a powder screening drum, the top of the powder screening drum is fixedly connected to a feed pipe, the bottom of the powder screening drum is fixedly connected to a discharge pipe, the powder screening drum is provided with a screening component for providing airflow to screen dust, the powder screening drum is provided with a powder taking component, the powder taking component comprises a plurality of powder storage drums arranged on the side wall of the powder screening drum, the top of one side wall of the powder storage drum is fixedly connected to a through pipe, the end of the through pipe away from the powder storage drum is connected to the top of the side wall of the powder screening drum, a first fan is fixedly connected in the through pipe, a motor is installed at the top of the powder screening drum, the output end of the motor is fixedly connected to a rotating shaft through a connecting piece, the end of the rotating shaft away from the motor passes through the powder screening drum and is fixedly connected to a spreading plate, and the spreading plate is located above the discharge pipe.

[0008] By adopting the above technical solution, when in use, the dust is placed on the spreading disc in the powder screening barrel, and air flow is provided to the powder screening barrel through the screening component. At the same time, the motor is started to make the rotating shaft drive the spreading disc to rotate, and the dust on the spreading disc is evenly sprinkled around, so that the air flow can screen the coarse powder and fine powder in the dust, and the fine powder can rise under the rising force of the air flow. Then, the screened fine powder is sucked into the through pipe and into the powder storage barrel by starting the first fan, so as to avoid the problem that the fine powder coming out of the screening net cannot enter the cyclone, and some of it may enter the powder selector, resulting in waste of resources.

[0009] Optionally, the screening component includes a second fan arranged on one side of the powder screening barrel, the output end of the second fan is fixedly connected to an air supply pipe, the end of the air supply pipe away from the second fan is fixedly connected to an air supply disk, the air supply disk is located below the powder screening barrel and is mounted on the discharge pipe, a plurality of annularly distributed air supply pipes are fixedly connected to the upper surface of the air supply disk, and the ends of the air supply pipes away from the air supply disk all pass through the powder screening barrel.

[0010] By adopting the above technical solution, by starting the second fan, the air flow is transported to the air supply disk through the air supply pipe, and then enters the bottom of the powder screening cylinder evenly through the air supply pipe, so that the rising force of the air flow is less than the gravity of the coarse powder, so that the coarse powder falls and is discharged from the discharge pipe, and the fine powder can rise with the rising force of the air flow to screen the dust.

[0011] Optionally, one end of the through pipe close to the powder screening cylinder is fixedly connected to a first filter screen.

[0012] By adopting the above technical solution, the first filter screen can prevent part of the coarse powder from entering the powder storage barrel through the through pipe, thereby improving the screening effect.

[0013] Optionally, the connecting member includes a connecting pipe fixedly connected to the output end of the motor, the rotating shaft is plugged into the connecting pipe, fixing bolts are provided on both sides of the connecting pipe, and the output end of the fixing bolt passes through the connecting pipe and is threadedly connected to the rotating shaft.

[0014] By adopting the above technical solution, the rotating shaft can be disconnected from the connecting pipe by removing the fixing bolts, making it convenient to disassemble the motor for maintenance and replacement.

[0015] Optionally, an opening is provided at the top of the powder storage cylinder, and a second filter is fixedly connected to the inner wall of the powder storage cylinder at the opening.

[0016] By adopting the above technical solution, the second filter can prevent fine powder from entering the powder storage cylinder through the through pipe and being discharged from the opening along with the air flow.

[0017] Optionally, a retaining tube is fixedly connected to the top of the inner wall of the powder screening cylinder, the bottom end of the retaining tube is located above the spreading plate, and the feed pipe is located in the retaining tube.

[0018] By adopting the above technical solution, the baffle tube can prevent the added dust from falling onto the spreading tray.

[0019] Optionally, a bearing is provided at the connection between the rotating shaft and the powder sieving drum, the inner wall of the bearing is fixedly connected to the rotating shaft, and the outer wall of the bearing is fixedly connected to the powder sieving drum.

[0020] By adopting the above technical solution, the bearing can prevent the rotating shaft from directly contacting the powder screening drum, thereby improving the rotation efficiency of the rotating shaft.

[0021] Optionally, a third filter is fixedly connected to the top of the air supply pipe.

[0022] By adopting the above technical solution, the third filter can prevent the coarse powder that falls from the air supply pipe from entering the air supply tray and becoming difficult to remove, thereby wasting resources.

[0023] In summary, the beneficial effects of this application are as follows:

[0024] 1. The present application cooperates with the first fan, the motor and the spreading disc. When in use, the dust is placed on the spreading disc in the powder screening drum, and air flow is provided to the powder screening drum through the screening component. At the same time, the motor is started to make the rotating shaft drive the spreading disc to rotate, and the dust on the spreading disc is evenly sprinkled around, so that the air flow separates the coarse powder and fine powder in the dust, and the fine powder rises under the upward force of the air flow. Then, the first fan is started to suck the screened fine powder into the through pipe and into the powder storage drum, thereby avoiding the problem that the fine powder coming out of the screening net cannot enter the cyclone, and some of it may enter the powder classifier, resulting in a waste of resources.

[0025] 2. By starting the second fan, the air flow is transported to the air supply plate through the air supply pipe, and then evenly enters the bottom of the powder screening cylinder through the air supply pipe, so that the rising force of the air flow is less than the gravity of the coarse powder, causing the coarse powder to fall and be discharged from the discharge pipe. The fine powder can rise with the rising force of the air flow and the dust is screened. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0027] Figure 2 For the utility model Figure 1 Schematic diagram of the enlarged structure of area A in the middle;

[0028] Figure 3 For the utility model Figure 1 Schematic diagram of the enlarged structure of area B in the middle.

[0029] Explanation of the accompanying symbols: 1. Powder screening cylinder; 2. Feed pipe; 3. Discharge pipe; 4. Powder storage cylinder; 5. Through pipe; 6. First fan; 7. Motor; 8. Rotating shaft; 9. Spreading plate; 10. Second fan; 11. Air duct; 12. Air supply plate; 13. Air supply pipe; 14. First filter; 15. Connecting pipe; 16. Fixing bolt; 17. Opening; 18. Second filter; 19. Block pipe; 20. Bearing; 21. Third filter. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-3 This application is described in further detail.

[0031] See also Figure 1-3 , an efficient and fine powder classifier includes a powder screening drum 1, the top of the powder screening drum 1 is fixedly connected to a feed pipe 2 for adding dust into the powder screening drum 1, the bottom of the powder screening drum 1 is fixedly connected to a discharge pipe 3 for discharging the coarse powder in the powder screening drum 1, the powder screening drum 1 is provided with a screening component for providing an airflow to screen the dust, the powder screening drum 1 is provided with a powder taking component for taking the sieved fine powder out of the powder screening drum 1, the powder taking component includes a plurality of powder storage drums 4 for storing fine powder arranged on the side wall of the powder screening drum 1, and a through pipe 5 is fixedly connected to the top of the side wall of one side of the powder storage drum 4. The end of the through pipe 5 away from the powder storage barrel 4 is connected to the top of the side wall of the powder screening barrel 1. A first fan 6 is fixedly connected to the through pipe 5 for sucking the fine powder in the powder screening barrel 1 into the powder storage barrel 4. A motor 7 for providing power is installed on the top of the powder screening barrel 1. The output end of the motor 7 is fixedly connected to a rotating shaft 8 through a connecting piece. The end of the rotating shaft 8 away from the motor 7 passes through the powder screening barrel 1 and is fixedly connected to a scattering plate 9 for catching the dust falling from the feed pipe 2 and then evenly spreading the dust to prevent the dust from accumulating together, so as to facilitate the screening of the dust. The scattering plate 9 is located above the discharge pipe 3.

[0032] During use, the dust is put into the powder screening barrel 1 from the feed pipe 2, so that the dust falls on the scattering plate 9, and the air flow is provided to the powder screening barrel 1 through the screening component. At the same time, the motor 7 is started to make the rotating shaft 8 drive the scattering plate 9 to rotate, and the dust on the scattering plate 9 is evenly sprinkled to the surroundings, so that the air flow can screen the coarse powder and fine powder in the dust, and the fine powder can rise under the rising force of the air flow. Then, the screened fine powder is sucked into the through pipe 5 and into the powder storage barrel 4 by starting the first fan 6, so as to avoid the problem that the fine powder coming out of the screening net cannot enter the cyclone, and some of it may enter the powder selector, resulting in a waste of resources.

[0033] Reference Figure 1 The screening component includes a second fan 10 arranged on one side of the powder screening drum 1, and the output end of the second fan 10 is fixedly connected to an air duct 11, and the end of the air duct 11 away from the second fan 10 is fixedly connected to an air supply plate 12, and the air supply plate 12 is located below the powder screening drum 1 and is sleeved on the discharge pipe 3. A plurality of annularly distributed air supply pipes 13 are fixedly connected to the upper surface of the air supply plate 12, and the ends of the air supply pipes 13 away from the air supply plate 12 all pass through the powder screening drum 1. By starting the second fan 10, the air flow is transported to the air supply plate 12 through the air duct 11, and then enters the bottom end of the powder screening drum 1 evenly through the air supply pipe 13, so that the rising force of the air flow is less than the gravity of the coarse powder, so that the coarse powder falls and is discharged from the discharge pipe 3, and the fine powder can rise with the rising force of the air flow to screen the dust.

[0034] Reference Figure 1 One end of the through pipe 5 close to the powder screening cylinder 1 is fixedly connected with a first filter screen 14. The first filter screen 14 can prevent part of the coarse powder from passing through the through pipe 5 into the powder storage cylinder 4, thereby improving the screening effect.

[0035] Reference Figure 2 The connecting part includes a connecting pipe 15 fixedly connected to the output end of the motor 7, the rotating shaft 8 is plugged into the connecting pipe 15, and fixing bolts 16 are provided on both sides of the connecting pipe 15. The output end of the fixing bolt 16 passes through the connecting pipe 15 and is threadedly connected to the rotating shaft 8. By removing the fixing bolt 16, the rotating shaft 8 can be disconnected from the connecting pipe 15, which facilitates the disassembly of the motor 7 for maintenance and replacement.

[0036] Reference Figure 1 The top of the powder storage barrel 4 is provided with an opening 17, and the inner wall of the powder storage barrel 4 is fixedly connected to a second filter screen 18 at the opening 17. The second filter screen 18 can prevent fine powder from entering the powder storage barrel 4 from the through pipe 5 and being discharged from the opening 17 along with the air flow.

[0037] Reference Figure 1The top of the inner wall of the powder screening cylinder 1 is fixedly connected with a blocking tube 19, the bottom end of the blocking tube 19 is located above the spreading plate 9, and the feed pipe 2 is located in the blocking tube 19. The blocking tube 19 can prevent the dust from falling onto the spreading plate 9 when adding dust.

[0038] Reference Figure 2 A bearing 20 is provided at the connection between the rotating shaft 8 and the powder screening drum 1. The inner wall of the bearing 20 is fixedly connected to the rotating shaft 8, and the outer wall of the bearing 20 is fixedly connected to the powder screening drum 1. The bearing 20 can prevent the rotating shaft 8 from directly contacting the powder screening drum 1, thereby improving the rotation efficiency of the rotating shaft 8.

[0039] Reference Figure 3 A third filter screen 21 is fixedly connected to the top of the air supply pipe 13. The third filter screen 21 can prevent the coarse powder from falling from the air supply pipe 13 into the air supply disk 12 and being difficult to remove, resulting in a waste of resources.

[0040] The implementation principle of the present application is as follows: when in use, the dust is put into the powder screening barrel 1 from the feed pipe 2, so that the dust falls on the scattering plate 9, and the second fan 10 is started to make the air flow be transported to the air supply plate 12 through the air duct 11, and then evenly enter from the bottom end of the powder screening barrel 1 through the air supply pipe 13, and at the same time, the motor 7 is started to make the rotating shaft 8 drive the scattering plate 9 to rotate, and the dust on the scattering plate 9 is evenly sprinkled to the surroundings, so that the air flow can sieve the coarse powder and fine powder in the dust, and the fine powder can rise under the rising force of the air flow, and then the sieved fine powder is sucked into the through pipe 5 and into the powder storage barrel 4 by starting the first fan 6, so as to avoid the problem of not being able to ensure that the fine powder coming out of the screening net enters the cyclone, and some of it may enter the powder selector, resulting in a waste of resources.

[0041] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A high-efficiency and high-fine powder separator, comprising a powder screening drum (1), wherein the top end of the powder screening drum (1) is fixedly connected to a feed pipe (2), the bottom end of the powder screening drum (1) is fixedly connected to a discharge pipe (3), the powder screening drum (1) is provided with a screening assembly for providing an airflow to screen dust, and the powder screening drum (1) is provided with a powder collecting assembly, characterized in that: The powder taking assembly includes a plurality of powder storage barrels (4) arranged on the side wall of the powder screening barrel (1), a through pipe (5) is fixedly connected to the top of the side wall of one side of the powder storage barrel (4), an end of the through pipe (5) away from the powder storage barrel (4) is connected to the top of the side wall of the powder screening barrel (1), a first fan (6) is fixedly connected in the through pipe (5), a motor (7) is installed at the top of the powder screening barrel (1), an output end of the motor (7) is fixedly connected to a rotating shaft (8) through a connecting piece, an end of the rotating shaft (8) away from the motor (7) passes through the powder screening barrel (1) and is fixedly connected to a spreading plate (9), and the spreading plate (9) is located above the discharge pipe (3).

2. The high-efficiency and high-fine powder separator according to claim 1, characterized in that: The screening assembly includes a second fan (10) arranged on one side of the powder screening barrel (1), the output end of the second fan (10) is fixedly connected to an air supply pipe (11), the end of the air supply pipe (11) away from the second fan (10) is fixedly connected to an air supply disk (12), the air supply disk (12) is located below the powder screening barrel (1) and is sleeved on the discharge pipe (3), the upper surface of the air supply disk (12) is fixedly connected to a plurality of annularly distributed air supply pipes (13), and the ends of the air supply pipes (13) away from the air supply disk (12) all pass through the powder screening barrel (1).

3. The high-efficiency and high-fine powder separator according to claim 1, characterized in that: One end of the through pipe (5) close to the powder screening cylinder (1) is fixedly connected to a first filter screen (14).

4. The high-efficiency and high-fine powder separator according to claim 1, characterized in that: The connecting member comprises a connecting pipe (15) fixedly connected to the output end of the motor (7), the rotating shaft (8) being plugged into the connecting pipe (15), fixing bolts (16) being provided on both sides of the connecting pipe (15), the output end of the fixing bolt (16) passing through the connecting pipe (15) and being threadedly connected to the rotating shaft (8).

5. The high-efficiency and high-fine powder separator according to claim 1, characterized in that: The top end of the powder storage cylinder (4) is provided with an opening (17), and the inner wall of the powder storage cylinder (4) is fixedly connected to a second filter screen (18) at the opening (17).

6. The high-efficiency and high-fine powder separator according to claim 1, characterized in that: A retaining tube (19) is fixedly connected to the top of the inner wall of the powder screening cylinder (1), the bottom end of the retaining tube (19) is located above the spreading plate (9), and the feed pipe (2) is located inside the retaining tube (19).

7. The high-efficiency and high-fine powder separator according to claim 1, characterized in that: A bearing (20) is provided at the connection between the rotating shaft (8) and the powder screening drum (1); the inner wall of the bearing (20) is fixedly connected to the rotating shaft (8), and the outer wall of the bearing (20) is fixedly connected to the powder screening drum (1).

8. The high-efficiency and high-fine powder separator according to claim 2, characterized in that: A third filter screen (21) is fixedly connected to the top end of the air supply pipe (13).

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