Multi-angle stirring paddle device for plastic granulation raw material stirring

Abstract

The utility model discloses a kind of multi-angle stirring paddle devices for plastic granulation raw material stirring, including stirring shaft, stirring tank and driving motor, the main stirring paddle group, vice stirring paddle group and bottom cleaning paddle group are sequentially provided on the stirring shaft along the axial direction. Main, vice stirring paddle group synergistic effect, through bidirectional shearing flow channel, inclined structure and guide vane, substantially improve raw material mixing uniformity, eliminate stirring dead angle;Bottom cleaning assembly can scrape tank bottom deposition raw material and clean tank wall, reduce residual waste and cross contamination. The ceramic wear-resistant layer of main, vice paddle enhances wear resistance, prolongs service life;Quick-release flange is matched with positioning pin and magnetic lock catch, so that cleaning assembly is disassembled conveniently, reduce maintenance cost. Overall design accelerates raw material circulation speed, improves stirring efficiency, guarantees subsequent granulation quality stability, applicable to efficient plastic granulation production.

Description

Technical Field

[0001] This utility model relates to the technical field of stirring devices, specifically a multi-angle stirring blade device for stirring raw materials for plastic granulation. Background Technology

[0002] In plastic granulation production, the uniformity of raw material mixing directly affects the quality of the finished product. Existing mixing devices mostly use single-structure blades, resulting in numerous dead zones and insufficient mixing of raw materials. Traditional blades are often straight-plate designs, only capable of unidirectional shearing, which easily leads to insufficient radial or axial flow of raw materials, causing localized clumping. Simultaneously, raw materials tend to adhere to the inner wall and bottom of the mixing tank; existing devices lack targeted cleaning structures, resulting in waste and potential deterioration due to prolonged retention, affecting subsequent production. Utility Model Content

[0003] In order to overcome the shortcomings of existing technical solutions, this utility model provides a multi-angle stirring blade device for stirring plastic granulation raw materials, which can effectively solve the problems mentioned in the background technology.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A multi-angle stirring blade device for mixing plastic granulation raw materials includes a stirring shaft, a stirring tank and a drive motor. The stirring shaft is provided with a main stirring blade group, a secondary stirring blade group and a bottom cleaning blade group in sequence along the axial direction.

[0006] The main stirring paddle assembly includes at least two sets of radially extending main blades, each set of main blades being distributed circumferentially around the stirring shaft, and adjacent sets of main blades having opposite inclination directions, forming a bidirectional shear flow channel.

[0007] The auxiliary stirring paddle assembly includes multiple pairs of circumferentially symmetrically arranged auxiliary blades. Each pair of auxiliary blades forms an angle of 30°-60° with the axis of the stirring shaft, and the ends of the auxiliary blades are bent downward to form guide hooks.

[0008] The bottom cleaning paddle assembly includes a horizontal scraper and a vertical scraper. The horizontal scraper is fitted with the bottom wall of the mixing tank with a clearance, and the vertical scraper extends radially along the mixing shaft and connects to the edge of the scraper.

[0009] As a further description of the above technical solution, the main blade includes a horizontal section and an inclined section. The horizontal section is arranged perpendicular to the stirring shaft, and the inclined section forms an angle of 110°-130° with the horizontal section and extends inclinedly towards the shaft end.

[0010] As a further description of the above technical solution, the surface of the inclined section is provided with wave-shaped turbulence protrusions, the height of the turbulence protrusions is 3-8mm, and the spacing between adjacent protrusions is 10-20mm.

[0011] As a further description of the above technical solution, the bending angle of the guide hook is 90°-120°, its hook tip faces the opposite side of the direction of rotation of the stirring shaft, and the gap between the hook tip and the inner wall of the stirring tank is 5-15mm.

[0012] As a further description of the above technical solution, a rotating cleaning brush is sleeved on the vertical scraper, and the outer diameter of the rotating cleaning brush is fitted with the inner wall of the mixing tank.

[0013] As a further description of the above technical solution, the surfaces of the main blade and the auxiliary blade are both covered with a ceramic wear-resistant layer, the thickness of which is 0.5-1.2mm.

[0014] As a further description of the above technical solution, the bottom of the stirring shaft is provided with a quick-release flange, and the bottom cleaning paddle assembly is detachably connected to the stirring shaft through the quick-release flange.

[0015] As a further description of the above technical solution, the mating surface of the quick-release flange is provided with a positioning pin and a magnetic lock.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] The multi-angle stirring blade device for mixing plastic granulation raw materials of this utility model has at least one of the following beneficial effects during use:

[0018] The main and auxiliary agitator blades work synergistically, significantly improving the uniformity of raw material mixing and eliminating dead zones through bidirectional shear channels, inclined structures, and guide hooks. The bottom cleaning component scrapes away sediment from the tank bottom and cleans the tank walls, reducing residue waste and cross-contamination. The ceramic wear-resistant layer on both main and auxiliary blades enhances wear resistance and extends service life. Quick-release flanges, combined with locating pins and magnetic locking mechanisms, facilitate easy installation and removal of the cleaning component, reducing maintenance costs. The overall design accelerates raw material circulation, improves mixing efficiency, and ensures stable granulation quality, making it suitable for high-efficiency plastic granulation production. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall assembly structure of a multi-angle stirring blade device for stirring plastic granulation raw materials according to the present invention.

[0020] Figure 2 This is a schematic diagram of the overall structure of the impeller of a multi-angle stirring impeller device for stirring plastic granulation raw materials according to this utility model.

[0021] Figure 3 This is a schematic diagram of the first side view of the blade structure of a multi-angle stirring blade device for stirring plastic granulation raw materials according to the present invention.

[0022] Figure 4This is a schematic diagram of the second side of the blade structure of a multi-angle stirring blade device for stirring plastic granulation raw materials according to the present invention.

[0023] Numbering on the map:

[0024] 1. Mixing tank; 2. Mixing shaft; 3. Drive motor; 4. Main mixing paddle assembly; 5. Auxiliary mixing paddle assembly; 6. Bottom cleaning paddle assembly; 7. Rotary cleaning brush; 8. Horizontal section; 9. Inclined section; 10. Quick-release flange; 11. Horizontal scraper; 12. Vertical scraper; 13. Auxiliary blade; 14. Ceramic wear-resistant layer; 15. Main blade. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] like Figure 1-4 As shown, this utility model provides a multi-angle stirring blade device for stirring plastic granulation raw materials, including a stirring shaft 2, a stirring tank 1 and a drive motor 3. The stirring shaft 2 is provided with a main stirring blade group 4, a secondary stirring blade group 5 and a bottom cleaning blade group 6 arranged sequentially along the axial direction.

[0027] In this embodiment, during operation, the drive motor 3 drives the stirring shaft 2 to rotate, and the main stirring paddle group 4, the auxiliary stirring paddle group 5 and the bottom cleaning paddle group 6 work together to achieve efficient stirring of plastic granulation raw materials.

[0028] The main stirring paddle assembly 4 includes at least two sets of radially extending main blades 15. Each set of main blades 15 is distributed circumferentially around the stirring shaft 2, and the inclination directions of adjacent sets of main blades 15 are opposite, forming a bidirectional shear flow channel.

[0029] In the main impeller assembly 4, at least two sets of radially extending main impeller blades 15 rotate with the stirring shaft 2. The horizontal section 8 of the main impeller blade 15 is set perpendicular to the stirring shaft 2, which can push the raw material to flow radially; the inclined section 9 forms an angle of 110°-130° with the horizontal section 8 and extends inclined towards the shaft end, so that the raw material generates axial movement while flowing radially. Since the inclination directions of adjacent sets of main impeller blades 15 are opposite, a bidirectional shear flow channel is formed, and the raw material is fully cut and mixed under the shear force in different directions. At the same time, the wavy turbulence protrusions (height 3-8mm, spacing between adjacent protrusions 10-20mm) on the surface of the inclined section 9 can further disturb the flow state of the raw material, increase the collision and mixing opportunities between the raw materials, and improve the uniformity of stirring.

[0030] The auxiliary stirring paddle assembly 5 includes multiple pairs of circumferentially symmetrically arranged auxiliary blades 13. Each pair of auxiliary blades 13 forms an angle of 30°-60° with the axis of the stirring shaft 2, and the ends of the auxiliary blades 13 are bent downward to form guide hooks.

[0031] The auxiliary impeller assembly 5 has multiple pairs of circumferentially symmetrically arranged auxiliary blades 13 at an angle of 30°-60° to the axis of the stirring shaft 2. When rotating, they can drive the raw material to flow simultaneously in the axial and radial directions, promoting the circulation of the raw material in the mixing tank 1. The guide hooks formed by the downward bending of the ends of the auxiliary blades 13 (bending angle of 90°-120°, with the hook tips facing the opposite side of the rotation direction of the stirring shaft 2, and a gap of 5-15mm between the hook tip and the inner wall of the mixing tank 1) can guide the raw material near the inner wall of the mixing tank 1 to the central area, preventing the raw material from accumulating on the tank wall, while enhancing the mixing of the raw material at the edge and the raw material at the center.

[0032] The bottom cleaning paddle assembly 6 includes a horizontal scraper 11 and a vertical scraper 12. The horizontal scraper 11 is clearance-fitted with the bottom wall of the mixing tank 1, and the vertical scraper 12 extends radially along the mixing shaft 2 and connects to the edge of the scraper.

[0033] The horizontal scraper 11 of the bottom cleaning paddle assembly 6 is fitted with the bottom wall of the mixing tank 1 with a clearance fit. When rotating with the stirring shaft 2, it can scrape off the raw material deposited at the bottom to prevent the raw material from settling and clumping. The vertical scraper 12 extends radially along the stirring shaft 2 and connects to the edge of the scraper. The outer diameter of the rotating cleaning brush 7 fitted on it is fitted with the inner wall of the mixing tank 1 with a clearance fit. During rotation, it cleans the tank wall to prevent the raw material from adhering to the tank wall.

[0034] Furthermore, the main impeller 15 includes a horizontal section 8 and an inclined section 9. The horizontal section 8 is perpendicular to the stirring shaft 2, and the inclined section 9 forms an angle of 110°-130° with the horizontal section 8 and extends inclined towards the shaft end. The surface of the inclined section 9 is provided with wavy turbulence protrusions, the height of which is 3-8mm and the spacing between adjacent protrusions is 10-20mm. The bending angle of the guide hook is 90°-120°, and its hook tip faces the opposite side of the rotation direction of the stirring shaft 2. The gap between the hook tip and the inner wall of the stirring tank 1 is 5-15mm.

[0035] The bidirectional shearing channel of the main stirring paddle group 4 and the special angle design of the horizontal section 8 and the inclined section 9 of the main blade 15, combined with the inclined angle and guide hook of the auxiliary stirring paddle group 5, enable the raw materials to generate complex flow and mixing in both the radial and axial directions, which greatly improves the mixing uniformity of the raw materials and is conducive to the quality stability of subsequent plastic granulation.

[0036] Furthermore, a rotating cleaning brush 7 is fitted onto the vertical scraper 12, and the outer diameter of the rotating cleaning brush 7 is in clearance fit with the inner wall of the mixing tank 1. The surfaces of the main blade 15 and the auxiliary blade 13 are both covered with a ceramic wear-resistant layer 14, the thickness of which is 0.5-1.2 mm.

[0037] The 0.5-1.2mm thick ceramic wear-resistant layer 14 covering the surfaces of the main blade 15 and the auxiliary blade 13 improves the wear resistance of the blades, extends the service life of the device, and reduces the maintenance cost of the equipment. The angle design of the auxiliary blade 13 and the function of the guide hook accelerate the circulation speed of the raw materials, while the wavy turbulence protrusions on the main blade 15 increase the disturbance of the raw materials, enabling the raw materials to reach a uniform mixing state in a shorter time and improving the mixing efficiency.

[0038] Furthermore, the bottom of the stirring shaft 2 is equipped with a quick-release flange 10, and the bottom cleaning paddle assembly 6 is detachably connected to the stirring shaft 2 via the quick-release flange 10. The mating surface of the quick-release flange 10 is equipped with a positioning pin and a magnetic lock. The quick-release flange 10 at the bottom of the stirring shaft 2 allows the bottom cleaning paddle assembly 6 to be detachably connected to the stirring shaft 2, and the positioning pin and magnetic lock on the mating surface of the quick-release flange 10 ensure the accuracy and stability of the connection, facilitating the disassembly, cleaning, and replacement of the bottom cleaning paddle assembly 6.

[0039] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A multi-angle stirring blade device for mixing raw materials for plastic granulation, comprising a stirring shaft, a stirring tank, and a drive motor, characterized in that, The stirring shaft is provided with a main stirring blade assembly, a secondary stirring blade assembly, and a bottom cleaning blade assembly in sequence along the axial direction. The main stirring paddle assembly includes at least two sets of radially extending main blades, each set of main blades being distributed circumferentially around the stirring shaft, and adjacent sets of main blades having opposite inclination directions, forming a bidirectional shear flow channel. The auxiliary stirring paddle assembly includes multiple pairs of circumferentially symmetrically arranged auxiliary blades. Each pair of auxiliary blades forms an angle of 30°-60° with the axis of the stirring shaft, and the ends of the auxiliary blades are bent downward to form guide hooks. The bottom cleaning paddle assembly includes a horizontal scraper and a vertical scraper. The horizontal scraper is fitted with the bottom wall of the mixing tank with a clearance, and the vertical scraper extends radially along the mixing shaft and connects to the edge of the scraper.

2. The multi-angle stirring paddle device for mixing plastic granulation raw materials according to claim 1, characterized in that: The main impeller includes a horizontal section and an inclined section. The horizontal section is set perpendicular to the stirring shaft, and the inclined section forms an angle of 110°-130° with the horizontal section and extends inclinedly towards the shaft end.

3. The multi-angle stirring paddle device for mixing plastic granulation raw materials according to claim 2, characterized in that: The inclined section surface is provided with wavy turbulence protrusions, the height of which is 3-8mm and the spacing between adjacent protrusions is 10-20mm.

4. The multi-angle stirring paddle device for mixing plastic granulation raw materials according to claim 1, characterized in that: The bending angle of the guide hook is 90°-120°, and its hook tip faces the opposite side of the direction of rotation of the stirring shaft. The gap between the hook tip and the inner wall of the stirring tank is 5-15mm.

5. The multi-angle stirring paddle device for mixing plastic granulation raw materials according to claim 1, characterized in that: A rotating cleaning brush is fitted onto the vertical scraper, and the outer diameter of the rotating cleaning brush is fitted with the inner wall of the mixing tank.

6. The multi-angle stirring paddle device for mixing plastic granulation raw materials according to claim 1, characterized in that: The surfaces of both the main blade and the auxiliary blade are covered with a ceramic wear-resistant layer, the thickness of which is 0.5-1.2 mm.

7. The multi-angle stirring blade device for mixing plastic granulation raw materials according to claim 1, characterized in that: The bottom of the stirring shaft is provided with a quick-release flange, and the bottom cleaning paddle assembly is detachably connected to the stirring shaft through the quick-release flange.

8. The multi-angle stirring blade device for mixing plastic granulation raw materials according to claim 7, characterized in that: The quick-release flange has a locating pin and a magnetic lock on its mating surface.

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