Grading efficient dynamic powder concentrator

Abstract

The utility model relates to the technical field of powder selecting equipment, and particularly discloses a grading efficient dynamic powder selecting machine which comprises a barrel body, a coarse powder discharging pipe arranged at the bottom of the barrel body, a hopper-shaped baffle disc arranged in the middle of the barrel body, a first motor vertically arranged on the lower portion in the barrel body, a first rotating shaft connected to the output end of the first motor, and fan blades arranged at the lower end of the first rotating shaft. A second motor is arranged at the top end of the barrel, the output end of the second motor faces downwards and is connected with a second rotating shaft, a cage type screening barrel is arranged on the second rotating shaft, a plurality of air outlet pipes are evenly distributed on the side wall of the upper portion of the barrel, and the other ends of the air outlet pipes are connected with a first cyclone dust collector. Air outlets in the tops of the first cyclone dust collectors are connected with air inlets of the second cyclone dust collectors through pipelines, a feeding hopper is arranged on the outer side of the side wall of the barrel, and the lower end of the feeding hopper is connected with a feeding pipe. The four-fineness grading device can be used for grading powder with four finenesses, screening is finer, and the grading effect is better.

Description

Technical Field

[0001] This utility model relates to the field of powder classification equipment technology, specifically a high-efficiency dynamic powder classifier. Background Technology

[0002] An air classifier is a device used to separate granular materials according to particle size. It plays a crucial role in many industrial fields such as cement production, mineral processing, and chemicals. Its main function is to select qualified fine powder from the ground mixture as the finished product, while returning coarse powder to the grinding equipment for further grinding. This effectively improves the efficiency of the grinding system, enhances product quality, and reduces energy consumption.

[0003] Chinese patent CN203091279U discloses a novel high-efficiency air classifier, including a drive unit, a dynamic air classifier, a feed inlet, a grading screen, an air inlet, a slag discharge outlet, a coarse powder outlet, a shell, and a finished product outlet. The dynamic air classifier is located in the upper part inside the shell and connected to the drive unit located outside the shell. The finished product outlet is located above the dynamic air classifier, and the lower part of the dynamic air classifier is connected to the coarse powder outlet. The grading screen is conical and located in the lower part inside the shell. The feed inlet is located directly above the grading screen through the shell, and an air inlet is located below the grading screen and connected to the slag discharge outlet. The grading screen is driven by a motor and can rotate at a constant speed along its centerline. The taper angle of the grading screen is adjustable.

[0004] The above technical solution can only perform two-stage powder selection, which is not very fine, increases the burden of reprocessing, and reduces production efficiency. Utility Model Content

[0005] To solve the above problems, the present invention adopts the following technical solution.

[0006] A high-efficiency dynamic classifier includes a cylinder, a coarse powder discharge pipe at the bottom of the cylinder, a hopper-shaped baffle in the middle of the cylinder, an upward channel between the hopper-shaped baffle and the cylinder, a medium-coarse powder discharge pipe at the bottom of the hopper-shaped baffle, a motor 1 vertically mounted in the lower part of the cylinder, the output end of the motor 1 connected to a rotating shaft 1, a fan blade at the lower end of the rotating shaft 1, and a pulverizing blade at the upper end of the rotating shaft 1, and a second motor 2 mounted at the top of the cylinder, the output end of the second motor 2 facing downwards and connected to a rotating shaft 2. A cage-shaped screening cylinder is installed on shaft two. Several air outlet pipes are evenly distributed on the upper side wall of the cylinder. The other end of the air outlet pipe is connected to a first cyclone dust collector. The bottom of the first cyclone dust collector is connected to a medium and fine powder discharge pipe. Several air outlets at the top of the first cyclone dust collector are connected to the air inlet of a second cyclone dust collector through pipes. The bottom of the second cyclone dust collector is connected to an ultrafine powder discharge pipe. A feed hopper is installed on the outer side wall of the cylinder. The lower end of the feed hopper is connected to a feed pipe. The other end of the feed pipe is connected to the top of the fan blade.

[0007] Preferably, a wind baffle is provided inside the cylinder, and the wind baffle is fixed between the bucket-shaped baffle and the bottom of the cylinder by a mounting bracket. The space between the wind baffle and the cylinder is a material discharge channel.

[0008] Preferably, the rotating shaft is also provided with a crushing mechanism, which includes a disc body with several vertical rods evenly distributed on the upper part of the disc body, and the crushing mechanism is located below the feed pipe.

[0009] Preferably, the disc body has an inverted conical structure.

[0010] Preferably, the outer side of the vertical rod is provided with several edges.

[0011] Preferably, a support frame is connected to the bottom of the cylinder.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention can classify powder into four fineness levels, making the screening more precise and the grading effect better, so that subsequent processing can be more targeted and improve work efficiency. Attached Figure Description

[0014] Figure 1 This is a cross-sectional view of the overall structure of this utility model;

[0015] Figure 2 for Figure 1 A schematic diagram of the structure at point A in the middle.

[0016] In the diagram: 1. Cylinder body; 2. Coarse powder discharge pipe; 3. Bucket-shaped baffle; 4. Upward passage; 5. Motor 1; 6. Shaft 1; 7. Fan blade; 8. Crushing blade; 9. Motor 2; 10. Shaft 2; 11. Cage-type screening cylinder; 12. Air outlet pipe; 13. First cyclone dust collector; 14. Medium and fine powder discharge pipe; 15. Second cyclone dust collector; 16. Ultrafine powder discharge pipe; 17. Feed hopper; 18. Feed pipe; 19. Baffle; 20. Material drop channel; 21. Crushing mechanism; 21-1. Disc body; 22-2. Vertical rod; 22. Medium and coarse powder discharge pipe. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0018] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example

[0020] like Figures 1-2 As shown, in this embodiment, a high-efficiency dynamic classifier includes a cylinder 1, a coarse powder discharge pipe 2 at the bottom of the cylinder 1, a bucket-shaped baffle 3 in the middle of the cylinder 1, an upward channel 4 between the bucket-shaped baffle 3 and the cylinder 1, a medium-coarse powder discharge pipe 22 at the bottom of the bucket-shaped baffle 3, a motor 5 vertically mounted in the lower part of the cylinder 1, a rotating shaft 6 connected to the output end of the motor 5, a fan blade 7 at the lower end of the rotating shaft 6, a crushing blade 8 at the upper end of the rotating shaft 6, and a second motor 9 mounted at the top of the cylinder 1, with the output end of the second motor 9 facing downwards and connected to a second rotating shaft 10. A cage-shaped screening cylinder 11 is installed on the rotating shaft 2 10. Two air outlet pipes 12 are symmetrically arranged on the upper side wall of the cylinder 1. The other end of the air outlet pipe 12 is connected to the first cyclone dust collector 13. The bottom of the first cyclone dust collector 13 is connected to the medium and fine powder discharge pipe 14. Several air outlets at the top of the first cyclone dust collector 13 are connected to the air inlet of the second cyclone dust collector 15 through pipes. The bottom of the second cyclone dust collector 15 is connected to the ultrafine powder discharge pipe 16. A feed hopper 17 is arranged on the outer side wall of the cylinder 1. The lower end of the feed hopper 17 is connected to the feed pipe 18. The other end of the feed pipe 18 is connected to the top of the fan blade 7.

[0021] In order to ensure that some coarse powder is not affected by the upward airflow during the falling process, in this embodiment, a wind baffle 19 is provided inside the cylinder 1. The wind baffle 19 is fixed between the bucket-shaped baffle 3 and the bottom of the cylinder 1 by a mounting bracket. The space between the wind baffle 19 and the cylinder 1 is the material drop channel 20.

[0022] To prevent powder from clumping and thus affecting the powder selection effect, in this embodiment, a crushing mechanism 21 is also provided on the rotating shaft 6. The crushing mechanism 21 includes a disc body 21-1, and several vertical rods 21-2 are evenly distributed on the upper part of the disc body 21-1. The crushing mechanism 21 is located below the feed pipe 18.

[0023] To prevent powder from accumulating on the disc 21-1, in this embodiment, the disc 21-1 has an inverted conical structure.

[0024] In order to improve the effect of breaking up and crushing the falling material, in this embodiment, the outer side of the vertical rod 21-2 is provided with several edges.

[0025] In this embodiment, a support frame is connected to the bottom of the cylinder 1.

[0026] The working principle and beneficial effects of the above technical solution are as follows:

[0027] In operation, first turn on motor 5 and motor 9, then feed the powder to be screened (hereinafter referred to as raw material) into the feed hopper 17. After the raw material is output from the lower end of the feed pipe 18, under the action of the rising airflow blown by the blower, some of the smaller particles of the raw material move upward, while some of the larger particles and agglomerated raw material move downward under the action of gravity and collide with the crushing mechanism 21. The agglomerated raw material is crushed after colliding with the crushing mechanism 21. The smaller particles move upward, and the larger particles continue to move downward, finally being output from the coarse powder discharge pipe 2. The upward-moving raw material first collides with the crushing blade 8, and then... After one-step crushing, the material moves upward along the bucket-shaped baffle 3. Some larger particles, due to the reduced upward airflow, enter the material discharge channel 20 and are finally discharged from the coarse powder discharge pipe 2. Another part of the raw material enters the upper part of the bucket-shaped baffle 3. Part of it falls into the bucket-shaped baffle 3 under the obstruction of the cage-type screening cylinder 11 and is finally discharged from the medium-coarse powder discharge pipe 22. The other part enters the cage-type screening cylinder 11 and continues to move upward, entering the first cyclone dust collector 13. Part of it is discharged from the medium-fine powder discharge pipe 14, and the other part enters the second cyclone dust collector 15 and is finally discharged from the ultrafine powder discharge pipe 16.

[0028] Compared with existing technologies, this invention can classify powder into four fineness levels, resulting in more detailed screening, better grading effect, more targeted subsequent processing, and improved work efficiency.

[0029] The above are merely preferred embodiments of this utility model; however, the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and its improved concept, should be included within the scope of protection of this utility model.

Claims

1. A high-efficiency dynamic air classifier, characterized in that, The system includes a cylinder (1), a coarse powder discharge pipe (2) at the bottom of the cylinder (1), a bucket-shaped baffle (3) in the middle of the cylinder (1), an upward channel (4) between the bucket-shaped baffle (3) and the cylinder (1), a medium-coarse powder discharge pipe (22) at the bottom of the bucket-shaped baffle (3), a motor (5) vertically installed in the lower part of the cylinder (1), a rotating shaft (6) connected to the output end of the motor (5), a fan blade (7) at the lower end of the rotating shaft (6), a crushing blade (8) at the upper end of the rotating shaft, a motor (9) installed at the top of the cylinder (1), a rotating shaft (10) with its output end facing downwards, and a rotating shaft (10) on the rotating shaft (10). A cage-type screening cylinder (11) is provided. Several air outlet pipes (12) are evenly distributed on the upper side wall of the cylinder (1). The other end of the air outlet pipe (12) is connected to a first cyclone dust collector (13). The bottom of the first cyclone dust collector (13) is connected to a medium and fine powder discharge pipe (14). The air outlets at the top of several first cyclone dust collectors (13) are connected to the air inlet of a second cyclone dust collector (15) through pipes. The bottom of the second cyclone dust collector (15) is connected to an ultrafine powder discharge pipe (16). A feed hopper (17) is provided on the outer side of the side wall of the cylinder (1). The lower end of the feed hopper (17) is connected to a feed pipe (18). The other end of the feed pipe (18) is connected to the top of the fan blade (7).

2. The high-efficiency dynamic air classifier according to claim 1, characterized in that, The cylinder (1) is provided with a wind baffle (19), which is fixed between the bucket-shaped baffle (3) and the bottom of the cylinder (1) by a mounting bracket. The space between the wind baffle (19) and the cylinder (1) is a material drop channel (20).

3. The high-efficiency dynamic air classifier according to claim 1, characterized in that, The rotating shaft (6) is also provided with a crushing mechanism (21), which includes a disc (21-1). Several vertical rods (21-2) are evenly distributed on the upper part of the disc (21-1). The crushing mechanism (21) is located below the feed pipe (18).

4. A high-efficiency dynamic air classifier according to claim 3, characterized in that, The disc body (21-1) has an inverted conical structure.

5. A high-efficiency dynamic air classifier according to claim 3, characterized in that, The outer side of the vertical rod (21-2) is provided with several edges.

6. A high-efficiency dynamic air classifier according to claim 1, characterized in that, A support frame is connected to the bottom of the cylinder (1).

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