Multi-position different-paddle powder stirrer

Abstract

The invention discloses a multi-position different-paddle powder stirrer which comprises a blade group for scattering, mixing and stirring powder, a powder lifting device for driving the powder at the bottom of a material barrel to move upwards and disperse outwards, the material barrel and a vertical driving device, the stirring blade group and the powder lifting device are mounted on the rack, and the charging basket is arranged below the stirring blade group and the powder lifting device; when the vertical driving device drives the stirring blade group and the powder lifting device to slide into the charging basket, the stirring blade group is distributed along the circumferential direction of the powder lifting device; the powder lifting device conveys powder in the material barrel from bottom to top and disperses the powder around, the lifted powder is scattered and mixed by the stirring blade set, and a plurality of circulating mixing loop structures are formed. By adopting a plurality of powder circulating structures, powder can be stirred and mixed for multiple times, and the powder stirring device has the beneficial effects of being uniform in stirring, high in speed and high in efficiency.

Description

Technical Field

[0001] This invention relates to a powder mixer, and more particularly to a multi-position paddle powder mixer. Background Technology

[0002] During the mixing and conveying of materials, especially powders with poor flowability or high solids content, clumping is prone to occur, leading to uneven mixing. Chinese Patent Application No. "202310227862.7" discloses a scraping structure at the bottom of a mixer drum. This structure uses a scraping crossbar at the bottom of the mixing paddle, with a scraping section on its side. Because the scraping crossbar is only used to rotate and scrape the powder at the bottom of the drum laterally, the powder can only be scraped and lifted a short distance vertically, making it difficult to generate vigorous movement within the drum. Therefore, uniform mixing cannot be achieved, resulting in poor mixing and failing to completely solve the problem of powder clumping and uneven mixing. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems by providing a multi-stage, multi-paddle powder mixer. This mixer employs a multi-stage powder circulation structure, enabling the powder to be stirred and mixed multiple times, resulting in advantages such as uniform mixing, high speed, and high efficiency.

[0004] The objective of this invention can be achieved using the following technical solutions:

[0005] A multi-stage, different-stage powder mixer, comprising

[0006] The mixing blade assembly is used to break up and mix powders;

[0007] The powder lifting device is used to drive the powder at the bottom of the hopper to move upward and disperse outward;

[0008] Material bucket, used to hold powder;

[0009] A vertical drive device is used to drive the mixing blade assembly and the powder lifting device to slide into or out of the material hopper;

[0010] The stirring blade assembly and powder lifting device are mounted on the frame, and the material hopper is located below the stirring blade assembly and powder lifting device. When the vertical drive device drives the stirring blade assembly and powder lifting device to slide into the material hopper, the stirring blade assembly is distributed along the circumference of the powder lifting device. The powder lifting device conveys the crushed material in the material hopper from bottom to top and disperses it in all directions. The lifted powder is dispersed and mixed by the stirring blade assembly to form multiple circulating mixing loop structures.

[0011] As a preferred embodiment, the powder lifting device is mounted on a frame that coincides with the central axis of the material hopper.

[0012] As a preferred embodiment, the lower end of the powder lifting device is uniformly provided with conical blades, and the inner bottom surface of the material bucket is a conical surface that matches the conical blades.

[0013] As a preferred embodiment, the powder lifting device includes a first rotating shaft and helical blades wound axially along the first rotating shaft.

[0014] As a preferred embodiment, the powder lifting device includes a central lifting device mounted on a frame that coincides with the central axis of the material hopper, and a circumferential lifting device; the circumferential lifting device and the stirring blade assembly are evenly distributed along the circumference of the central lifting device.

[0015] As a preferred embodiment, the lower end of the helical blades of the central lifting device extends into the space between two adjacent conical blades.

[0016] As a preferred embodiment, the lower end of the stirring blade assembly is provided with a scraping part. When the vertical drive device drives the stirring blade assembly to slide into the lowest position inside the material bucket, the scraping part and the conical blade extend into the space formed by the conical surface of the material bucket.

[0017] As a preferred embodiment, the stirring blade assembly includes at least three stirring blades: each stirring blade consists of a shaft head and at least two helical rods, with the scraping part located at the lower end of the helical rods.

[0018] As a preferred embodiment, the frame is provided with a scraper for scraping off powder adhering to the inner wall of the hopper.

[0019] As a preferred embodiment, the frame is provided with a first horizontal drive device for driving the stirring blade assembly and the powder lifting device to rotate around the central axis of the hopper, and a second horizontal drive device for driving the rotation of the stirring blade assembly and the powder lifting device.

[0020] Implementing this invention has the following beneficial effects:

[0021] 1. The mixing blade assembly of this invention includes multiple mixing blades, which are distributed along the circumference of the powder lifting device, thus forming multiple powder circulation mixing loop structures between the powder lifting device and the mixing blades. When the powder lifting device is working, the powder at the bottom of the hopper is transported from bottom to top; and the powder spreads to the surrounding area upon reaching the liquid surface, causing the powder to be dispersed and mixed by the mixing blades distributed around it, resulting in intense impact and movement. The powder stirred and mixed by the mixing blades sinks to the bottom of the hopper and is then transported back to the top by the powder lifting device, thus forming a continuous circulation mixing loop structure that moves the powder at the bottom of the hopper from bottom to top and disperses and moves it. This prevents powder sedimentation at the bottom of the hopper, greatly promotes the crushing and mixing of powder, and has the advantages of uniform mixing, high speed, and high efficiency.

[0022] 2. As the conical blades rotate, they scrape and tumble the powder at the bottom of the hopper, causing it to move outwards and upwards. The upward-moving powder is then conveyed upwards by the powder lifting device, forming the multiple circulating mixing loops described above. Meanwhile, the powder moving outwards is conveyed upwards along the conical surface of the hopper to the mixing blade assembly, where the powder moving in both directions meets and is stirred and mixed by the mixing blade assembly. This results in intense collisions of the powder at the bottom of the hopper, leading to more uniform, rapid, and efficient mixing.

[0023] 3. The central lifting device of the present invention conveys the upward-moving powder upward to form the above-mentioned multiple circulating mixing loop structure; at the same time, the circumferential lifting device conveys a portion of the powder moving in all directions upward, and when it reaches the surface, the powder surges upward, causing the powder to spread in all directions and form irregular movement, making the mixing more chaotic, thereby improving the uniformity of powder mixing.

[0024] 4. When the conical blades rotate, the powder moving in all directions only needs to move a very small distance upward along the conical surface before it can be scraped by the scraper and fed into the mixing blade assembly for stirring and mixing, thereby reducing the upward movement time and improving the efficiency of stirring and mixing.

[0025] 5. The multiple stirring paddles of the present invention and the central lifting device form multiple circulating mixing loop structures; at the same time, the conical blades, the scraper, and the stirring paddles form a mixing loop structure opposite to the circulating mixing loop structure; the two mixing loop structures in different directions enable the powder to collide and mix with each other, improving the uniformity and efficiency of mixing.

[0026] 6. In this invention, the powder scraped off the inner wall of the material barrel is guided along the scraper between two adjacent stirring paddles; when the stirring paddles revolve, the frame drives the scraper to scrape off the powder adhering to the inner wall of the material barrel; the scraped-off powder is simultaneously dispersed and mixed by the two adjacent stirring paddles, making the mixing more uniform and efficient. Attached Figure Description

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 This is a schematic diagram of the structure of the multi-position paddle powder mixer of the present invention.

[0029] Figure 2 yes Figure 1 A schematic diagram of the structure of the mixing blade assembly and powder lifting device extending into the material bucket.

[0030] Figure 3 yes Figure 1 Top view. Detailed Implementation

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Example

[0033] Reference Figures 1 to 3 This embodiment relates to a multi-stage paddle mixer, including a set of stirring blades 1 for dispersing and mixing powder, a powder lifting device 3 for driving the powder at the bottom of the hopper 2 to move upward and disperse outward, a hopper 2 for holding the powder, and a vertical drive device (not shown in the figure) for driving the stirring blades 1 and the powder lifting device 3 to slide into or out of the hopper 2; the stirring blades 1 and the powder lifting device 3 are mounted on a frame 4, and the hopper 2 is located below the stirring blades 1 and the powder lifting device 3; when the vertical drive device drives the stirring blades 1 and the powder lifting device 3 to slide into the hopper 2, the stirring blades 1 are distributed along the circumference of the powder lifting device 3; the powder lifting device 3 conveys the powder in the hopper 2 from bottom to top and disperses it in all directions, and the lifted powder is dispersed and mixed by the stirring blades 1 to form multiple circulating mixing loop structures.

[0034] The stirring blade assembly 1 of this structure includes multiple stirring blades 12, which are distributed along the circumference of the powder lifting device 3, thus forming multiple powder circulation mixing loop structures between the powder lifting device 3 and the stirring blades. When the powder lifting device 3 is working, the powder at the bottom of the hopper 2 is transported from bottom to top; and when the powder reaches the liquid surface, it spreads in all directions, causing the powder to be broken up and mixed by the stirring blade assembly 1 distributed around it, thereby generating intense impact and movement. The powder stirred and mixed by the stirring blade assembly sinks to the bottom of the hopper 2, and is then transported back to the top by the powder lifting device 3, thus forming a continuous circulation mixing loop structure that moves the powder at the bottom of the hopper 2 from bottom to top and is broken up and moved, preventing the powder from settling at the bottom of the hopper 2, greatly promoting the crushing and mixing of the powder, and has the advantages of uniform mixing, fast speed and high efficiency.

[0035] The powder lifting device 3 is mounted on the frame 4, which coincides with the central axis of the material bucket 2. When the powder lifting device 3 is working, the powder at the bottom of the material bucket 2 can be evenly transported to the center position, and then transported upward by the powder lifting device 3; when the powder reaches the surface, it is sprayed upward, causing the powder to spread in all directions, so that the multiple stirring paddles 12 can evenly stir and mix the powder.

[0036] The lower end of the powder lifting device 3 is uniformly provided with conical blades 31, and the inner bottom surface of the material bucket 2 is a conical surface 21 that matches the conical blades 31. A discharge port 23 with a switch valve 22 is opened at the center of the bottom end of the material bucket 2. To facilitate the discharge of powder from the material bucket 2 through the discharge port 23, the inner bottom surface of the material bucket 2 is designed as a conical surface 21. When the conical blades 31 rotate, they scrape and flip the powder at the bottom of the material bucket 2, causing the powder to move in both directions and upwards. The upward-moving powder is further conveyed upwards by the powder lifting device 3, forming the aforementioned multiple circulating mixing loop structure; while the powder moving in both directions is conveyed upwards along the conical surface 21 of the material bucket 2 to the stirring blade assembly 1, so that the powder moving in both directions meets at the stirring blade assembly 1 and is stirred and mixed by the stirring blade assembly 1, resulting in intense collision of the powder at the bottom of the material bucket 2, making the mixing more uniform, faster, and more efficient.

[0037] The powder lifting device 3 includes a first rotating shaft 31 and spiral blades 32 wound around the first rotating shaft 31 axially. During operation, the first rotating shaft 31 drives the spiral blades 32 to rotate; then the spiral blades 32 transport the powder from the bottom of the hopper 2 upwards. Upon reaching the surface, the powder is ejected upwards.

[0038] The powder lifting device 3 includes a central lifting device 33 and a circumferential lifting device 34 mounted on a frame 4 that coincides with the central axis of the material hopper 2. The circumferential lifting device 34 and the stirring blade assembly 1 are evenly distributed along the circumference of the central lifting device 33. The central lifting device 33 conveys the upward-moving powder upward, forming the aforementioned multiple circulating mixing loop structure. Simultaneously, the circumferential lifting device 34 conveys a portion of the powder moving outward, and upon reaching the surface, the powder surges upward, causing it to spread outward and form irregular motion, making the mixing more chaotic, thereby improving the uniformity of the powder mixing.

[0039] The lower end of the spiral blade 32 of the central lifting device 33 extends into the space between two adjacent conical blades 31. When the conical blades 31 rotate, the upward-moving powder only needs to travel a very small distance to be conveyed upward by the spiral blades 32, thereby reducing the upward movement time and improving the efficiency of stirring and mixing. Multiple spiral blades 32 can be provided, with the lower end of each extending into the space between two adjacent conical blades 31.

[0040] The lower end of the stirring blade assembly 1 is provided with a scraper part 11. When the vertical drive device drives the stirring blade assembly 1 to slide into the lowest position inside the material bucket 2, the scraper part 11 and the conical blade 31 extend into the space 22 formed by the conical surface 21 of the material bucket 2. When the conical blade 31 rotates, the powder moving in all directions only needs to move a small distance upward along the conical surface 21 to be scraped by the scraper part 11 into the stirring blade assembly 1 for stirring and mixing, thereby reducing the upward movement time and improving the stirring and mixing efficiency. The scraper part 11 and the conical blade 31 are close to each other; when the stirring blade assembly 1 rotates, the movement trajectory of the scraper part 11 is a conical rotating body, and the taper of the rotating body is the same as the taper of the conical surface 21 of the bottom surface of the material bucket 2.

[0041] The stirring blade assembly 1 includes at least three stirring blades 12: each stirring blade 12 consists of a shaft head 121 and at least two spiral rods 122, with a scraper 11 located at the lower end of the spiral rods 122. Multiple stirring blades 12 and the central lifting device 33 form multiple circulating mixing loop structures; simultaneously, the conical blades 31, the scraper 11, and the stirring blades 12 form a mixing loop structure opposite to the circulating mixing loop structure; these two mixing loop structures in different directions allow the powder to collide and mix, improving the uniformity and efficiency of the mixing.

[0042] The frame 4 is equipped with a first horizontal drive device for driving the stirring blade assembly 1 and the powder lifting device 3 to rotate around the central axis of the material bucket 2, and a second horizontal drive device for driving the rotation of the stirring blade assembly 1 and the powder lifting device 3. The first horizontal drive device drives the stirring blade assembly 1 and the powder lifting device 3 to revolve around the central axis of the material bucket 2, while the second drive device drives the stirring blade assembly 1 and the powder lifting device 3 to rotate on their own axis. This structure continuously lifts, tumbles, and disperses the material in the bucket through the rotation and revolution of the stirring blade assembly 1 and the powder lifting device 3, causing the material to undergo irregular and vigorous movement, thereby achieving more efficient and uniform mixing of the powder.

[0043] The frame 4 is equipped with scrapers 5 for scraping off the powder adhering to the inner wall of the material barrel 2. The scrapers 5 are positioned on the frame 4 between two adjacent mixing blades 12, so that a scraper 5 is provided between each pair of adjacent mixing blades 12. The scrapers 5 are inclined, and the tail end of the scrapers 5 is directly opposite the space between the two adjacent mixing blades 12. The powder scraped off from the inner wall of the material barrel 2 is guided along the scrapers 5 between the two adjacent mixing blades 12. When the mixing blades 12 revolve, the frame 4 drives the scrapers 5 to scrape off the powder adhering to the inner wall of the material barrel 2. The scraped-off powder is simultaneously dispersed and mixed by the two adjacent mixing blades 12, making the mixing more uniform and efficient.

[0044] The above description is merely a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. Therefore, any equivalent variations made in accordance with the claims of the present invention are still within the scope of the present invention.

Claims

1. A multi-position heterodyne powder mixer, characterized in that: include The mixing blade assembly is used to break up and mix powders; The powder lifting device is used to drive the powder at the bottom of the hopper to move upward and disperse outward; Material bucket, used to hold powder; A vertical drive device is used to drive the mixing blade assembly and the powder lifting device to slide into or out of the material hopper; The stirring blade assembly and the powder lifting device are mounted on the frame, and the material bucket is located below the stirring blade assembly and the powder lifting device; when the vertical drive device drives the stirring blade assembly and the powder lifting device to slide into the material bucket, the stirring blade assembly is distributed along the circumference of the powder lifting device. The powder lifting device conveys the crushed material in the hopper from bottom to top and disperses it in all directions. The lifted powder is broken up and mixed by the stirring blade assembly, forming multiple circulating mixing loop structures.

2. The multi-position heterodyne powder mixer according to claim 1, characterized in that, The powder lifting device is mounted on a frame that coincides with the central axis of the material hopper.

3. A multi-position heterodyne powder mixer according to claim 2, characterized in that, The lower end of the powder lifting device is uniformly provided with conical blades, and the inner bottom surface of the material bucket is a conical surface that matches the conical blades.

4. A multi-position paddle mixer for powder according to any one of claims 1 to 3, characterized in that, The powder lifting device includes a first rotating shaft and helical blades wound along the axial direction of the first rotating shaft.

5. A multi-position paddle mixer for powder according to claim 1, characterized in that, The powder lifting device includes a central lifting device mounted on a frame that coincides with the central axis of the material hopper, and a circumferential lifting device; the circumferential lifting device and the stirring blade assembly are evenly distributed along the circumference of the central lifting device.

6. A multi-position paddle mixer for powder according to claim 5, characterized in that, The lower end of the spiral blades of the central lifting device extends into the space between two adjacent conical blades.

7. A multi-position paddle mixer for powder according to claim 3, characterized in that, The lower end of the stirring blade assembly is provided with a scraping part. When the vertical drive device drives the stirring blade assembly to slide into the lowest position in the material bucket, the scraping part and the conical blade extend into the space formed by the conical surface of the material bucket.

8. A multi-position paddle mixer for powder according to claim 1 or 7, characterized in that, The stirring blade assembly includes at least three stirring blades: each stirring blade consists of a shaft head and at least two spiral rods, with the scraping part located at the lower end of the spiral rods.

9. A multi-position paddle mixer for powder according to claim 1 or 2, characterized in that, The frame is equipped with scrapers for scraping off powder adhering to the inner wall of the material barrel.

10. A multi-position paddle mixer for powder according to claim 1, characterized in that, The frame is equipped with a first horizontal drive device for driving the stirring blade assembly and the powder lifting device to rotate around the central axis of the hopper, and a second horizontal drive device for driving the rotation of the stirring blade assembly and the powder lifting device.

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