Graded screening device for superfine powder

Abstract

The utility model relates to the technical field of screening equipment, and discloses a superfine powder grading screening device which comprises a screening barrel, an inclined barrel bottom is fixedly connected to the bottom of the screening barrel, a discharging pipe is fixedly connected to the middle of the lower side of the inclined barrel bottom, a top cover is fixedly connected to the top of the screening barrel, and a feeding pipe is fixedly connected to the left end of the top cover. The top of the feeding pipe is fixedly connected with a discharging hopper, the interior of the screening barrel is fixedly connected with a plurality of screening plates, the upper sides of the screening plates are fixedly connected with flow guide plates, and the right ends of the flow guide plates are fixedly connected with baffles. Powder can move towards the outer side along the inner wall of the flow guide plate, the powder can be conveniently discharged from the discharging port, coarse powder can be conveniently discharged in time, the screening effect can be improved, the cleaning rod, the first scraper and the second scraper rotate, the cleaning rod can prevent the screening plate from being blocked, the first scraper can clean the collecting hopper, and the screening efficiency is improved. And falling from the discharging pipe is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of screening equipment, in particular to an ultra-fine powder grading and screening device. Background Art

[0002] Ultrafine powders refer to tiny solid particles whose sizes are between molecules, atoms and bulk materials, usually ranging from 1 to 100 nm. These powders include particles of various materials such as metals, non-metals, organics, inorganics and biological materials. Ultrafine powders can be divided into multiple levels according to different particle sizes.

[0003] After searching, a Dendrobium ultrafine powder grading and screening device with announcement number CN216779397U includes a grading and screening device housing, a bottom plate is fixedly installed at the lower part of the grading and screening device housing, a telescopic shaft is fixedly installed inside the grading and screening device housing and located on the upper side of the bottom plate, and a vibrating screen device is installed inside the grading and screening device housing and located on the upper side of the telescopic shaft; the vibrating screen device includes a second electric push rod and a vibrator, and a fixed protective shell is fixedly installed on the outside of the second electric push rod on the left and right sides and away from the vibrator, and a fixed block is fixedly installed on the axis of the second electric push rod on the left and right sides close to the vibrator, and a vibrating plate is installed between the fixed block and the vibrator on the left and right sides. The Dendrobium ultrafine powder grading and screening device improves the overall screening efficiency of the Dendrobium ultrafine powder grading and screening device, and also makes an effective and detailed classification of Dendrobium ultrafine powder, which is convenient and practical;

[0004] Based on the above patent, the powder can be screened in multiple stages by setting up multiple sieve plates, but the discharge port is set on the side and there is a lack of auxiliary discharge measures, which makes it difficult to quickly remove the coarse powder. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes an ultrafine powder grading and screening device which can perform multi-stage screening and can discharge coarse powder in time to avoid affecting the subsequent screening effect.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A superfine powder grading and screening device comprises a screening barrel, the bottom of the screening barrel is fixedly connected with an inclined barrel bottom, the lower middle part of the inclined barrel bottom is fixedly connected with a discharge pipe, the top of the screening barrel is fixedly connected with a top cover, the left end of the top cover is fixedly connected with a feed pipe, the top of the feed pipe is fixedly connected with a lower hopper, a plurality of sieve plates are fixedly connected to the inside of the screening barrel, the upper sides of the sieve plates are fixedly connected with guide plates, the right ends of the guide plates are fixedly connected with baffles, the left side of the screening barrel corresponding to the baffle is fixedly connected with a discharge port, the lower side of the sieve plate is fixedly connected with a vibrator, the bottom of the sieve plate is fixedly connected with a collecting hopper, the bottom of the collecting hopper is fixedly connected with a lower pipe, and a scraping assembly is provided in the middle of the screening barrel.

[0008] Furthermore, the scraper assembly includes a rotating rod in the middle of the top cover, a motor is arranged on the top of the rotating rod, a plurality of cleaning rods are fixedly connected to the outer wall of the middle section of the rotating rod, a first scraper is fixedly connected to the lower sides of the left and right ends of the cleaning rod, a second scraper is fixedly connected to the outer wall of the lower end of the rotating rod, and a spiral blade is fixedly connected to the bottom end of the rotating rod.

[0009] Furthermore, the lower end of the screening barrel is fixedly connected with a base.

[0010] Furthermore, the upper end of the rotating rod is rotatably connected to the middle part of the top cover.

[0011] Furthermore, the lower side of the motor is fixedly connected to the middle part of the upper side of the top cover, and the driving shaft of the motor is fixedly connected to the top of the rotating rod.

[0012] Furthermore, the upper side of the cleaning rod is tightly matched with the lower side of the screen plate.

[0013] Furthermore, the lower side of the first scraper is tightly matched with the upper side of the collecting hopper.

[0014] Furthermore, the lower side of the second scraper is tightly matched with the upper side of the inclined barrel bottom, and the outer wall of the spiral blade is tightly matched with the inner wall of the discharge pipe.

[0015] The utility model has the following beneficial effects:

[0016] 1. In the utility model, the ultrafine powder is added from the middle of the upper side of the sieve plate, and the powder can move outward along the inner wall of the guide plate, thereby playing a guiding role, facilitating discharge from the discharge port, facilitating timely discharge of coarse powder, and increasing the time that the powder stays on the upper side of the sieve plate, thereby improving the screening effect.

[0017] 2. In the utility model, the motor is provided to drive the rotating rod to rotate, thereby driving the cleaning rod, the first scraper and the second scraper to rotate. The cleaning rod can prevent the screen plate from being blocked, and the first scraper can clean the collecting hopper to facilitate falling from the discharge pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is an overall schematic diagram of an ultrafine powder grading and screening device proposed by the utility model;

[0019] Figure 2 A schematic diagram of a sieve plate of an ultrafine powder grading and screening device proposed by the utility model;

[0020] Figure 3 The utility model provides a schematic diagram of a rotating rod of an ultrafine powder grading and screening device.

[0021] Legend:

[0022] 1. Screening barrel; 2. Sloping barrel bottom; 3. Discharge pipe; 4. Top cover; 5. Feed pipe; 6. Down hopper; 7. Sieve plate; 8. Guide plate; 9. Baffle; 10. Discharge port; 11. Collecting hopper; 12. Down hopper; 13. Vibrator; 14. Rotating rod; 15. Motor; 16. Cleaning rod; 17. First scraper; 18. Second scraper; 19. Spiral blade; 20. Base. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Reference Figure 1-3 , the utility model provides an embodiment: an ultrafine powder grading and screening device, comprising a screening barrel 1, the bottom of the screening barrel 1 is fixedly connected with an inclined barrel bottom 2, the lower middle part of the inclined barrel bottom 2 is fixedly connected with a discharge pipe 3, the top of the screening barrel 1 is fixedly connected with a top cover 4, the left end of the top cover 4 is fixedly connected with a feed pipe 5, the top of the feed pipe 5 is fixedly connected with a lower hopper 6, the inside of the screening barrel 1 is fixedly connected with a plurality of sieve plates 7, the upper sides of the sieve plates 7 are fixedly connected with guide plates 8, the right ends of the guide plates 8 are fixedly connected with baffles 9, the left side of the screening barrel 1 corresponding to the baffle 9 is fixedly connected with a discharge port 10, the lower side of the sieve plate 7 is fixedly connected with a vibrator 13, the bottom of the sieve plate 7 is fixedly connected with a collecting hopper 11, the bottom of the collecting hopper 11 is fixedly connected with a lower feeding pipe 12, and the lower end of the screening barrel 1 is fixedly connected with a base 20;

[0025] The multi-layer sieve plate 7 can be used for multi-stage screening. The vibrator 13 can drive the sieve plate 7 to vibrate and screen the powder. The guide plate 8 can guide the coarse powder to the edge and discharge it from the discharge port 10 during screening. At the same time, the powder retention time can be increased to facilitate the full screening of fine powder and let it fall on the sieve plate 7 on the lower side, thereby improving the screening effect and discharging the coarse powder in time to avoid the retention of coarse powder affecting the screening effect.

[0026] A rotating rod 14 is rotatably connected to the middle part of the top cover 4, and a motor 15 is arranged on the top of the rotating rod 14. The lower side of the motor 15 is fixedly connected to the middle part of the upper side of the top cover 4, and the driving shaft of the motor 15 is fixedly connected to the top of the rotating rod 14. A plurality of cleaning rods 16 are fixedly connected to the outer wall of the middle section of the rotating rod 14, and the upper side of the cleaning rod 16 is tightly matched with the lower side of the sieve plate 7. The lower sides of the left and right ends of the cleaning rod 16 are fixedly connected with a first scraper 17, and the lower side of the first scraper 17 is tightly matched with the upper side of the collecting hopper 11. A second scraper 18 is fixedly connected to the outer wall of the lower end of the rotating rod 14, and the lower side of the second scraper 18 is tightly matched with the upper side of the inclined barrel bottom 2. A spiral leaf 19 is fixedly connected to the bottom end of the rotating rod 14, and the outer wall of the spiral leaf 19 is tightly matched with the inner wall of the discharge pipe 3.

[0027] The motor 15 can drive the rotating rod 14 to rotate, thereby driving the cleaning rod 16, the first scraper 17, the second scraper 18 and the spiral blade 19 to rotate. The rotating cleaning rod 16 can clean the sieve plate 7 to prevent the sieve plate 7 from being blocked. The rotating first scraper 17 can clean the collecting hopper 11 to facilitate falling from the discharge pipe 12. The second scraper 18 can be set to clean the inclined barrel bottom 2 to facilitate discharging. The spiral blade 19 can improve the discharging effect.

[0028] Working principle: Powder can be added into the screening barrel 1 through the provided lower hopper 6 and the feed pipe 5, and fall into the middle of the guide plate 8. The provided vibrator 13 drives the sieve plate 7 to vibrate and screen the powder. The provided guide plate 8 can guide the powder to the guide edge and discharge it from the discharge port 10. The provided collecting hopper 11 can collect the powder screened by the sieve plate 7 and drop it from the lower feeding pipe 12 into the lower sieve plate 7 for screening. The provided motor 15 can drive the rotating rod 14 to rotate, thereby driving the cleaning rod 16, the first scraper 17, the second scraper 18 and the spiral blade 19 to rotate. The rotating cleaning rod 16 can clean the sieve plate 7 to prevent the sieve plate 7 from being blocked. The rotating first scraper 17 can clean the collecting hopper 11 to facilitate falling from the lower feeding pipe 12. The provided second scraper 18 can clean the inclined barrel bottom 2 to facilitate discharging. The provided spiral blade 19 can improve the discharging effect.

[0029] Finally, it should be noted that the above is only 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 can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An ultrafine powder grading and screening device, comprising a screening barrel (1), characterized in that: The bottom of the screening barrel (1) is fixedly connected to an inclined barrel bottom (2), a discharge pipe (3) is fixedly connected to the middle of the lower side of the inclined barrel bottom (2), the top of the screening barrel (1) is fixedly connected to a top cover (4), a feed pipe (5) is fixedly connected to the left end of the top cover (4), a lower hopper (6) is fixedly connected to the top of the feed pipe (5), a plurality of sieve plates (7) are fixedly connected to the inside of the screening barrel (1), and the upper sides of the sieve plates (7) are fixedly connected to A guide plate (8), the right end of each of the guide plates (8) is fixedly connected to a baffle plate (9), a position on the left side of the screening barrel (1) corresponding to the baffle plate (9) is fixedly connected to a discharge port (10), a vibrator (13) is fixedly connected to the lower side of the screening plate (7), a collecting hopper (11) is fixedly connected to the bottom of the screening plate (7), a discharge pipe (12) is fixedly connected to the bottom of the collecting hopper (11), and a scraping assembly is provided in the middle of the screening barrel (1).

2. The ultrafine powder grading and screening device according to claim 1, characterized in that: The scraper assembly comprises a rotating rod (14) in the middle of the top cover (4), a motor (15) is arranged on the top of the rotating rod (14), a plurality of cleaning rods (16) are fixedly connected to the outer wall of the middle section of the rotating rod (14), a first scraper (17) is fixedly connected to the lower sides of the left and right ends of the cleaning rod (16), a second scraper (18) is fixedly connected to the outer wall of the lower end of the rotating rod (14), and a spiral blade (19) is fixedly connected to the bottom end of the rotating rod (14).

3. The ultrafine powder grading and screening device according to claim 1, characterized in that: The lower end of the screening barrel (1) is fixedly connected to a base (20).

4. The ultrafine powder grading and screening device according to claim 2, characterized in that: The upper end of the rotating rod (14) is rotatably connected to the middle part of the top cover (4).

5. The ultrafine powder grading and screening device according to claim 2, characterized in that: The lower side of the motor (15) is fixedly connected to the middle part of the upper side of the top cover (4), and the driving shaft of the motor (15) is fixedly connected to the top of the rotating rod (14).

6. The ultrafine powder grading and screening device according to claim 2, characterized in that: The upper side of the cleaning rod (16) is tightly fitted with the lower side of the screen plate (7).

7. The ultrafine powder grading and screening device according to claim 2, characterized in that: The lower side of the first scraper (17) is tightly fitted with the upper side of the collecting hopper (11).

8. The ultrafine powder grading and screening device according to claim 2, characterized in that: The lower side of the second scraper (18) is tightly fitted with the upper side of the inclined barrel bottom (2), and the outer wall of the spiral blade (19) is tightly fitted with the inner wall of the discharge pipe (3).

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