A stirring device for small quantities of PP granules

Abstract

This utility model belongs to the field of mechanical engineering technology, specifically referring to a mixing device for mixing small quantities of PP granules. It includes a mixing cylinder, inclined and equipped with a stirring paddle inside; a support mechanism, including a support base located below the bottom of the mixing cylinder and symmetrically connected leg assemblies on both sides of the bottom of the support base, with a drive motor connected to the stirring paddle mounted on the support base; and a quick-release mechanism, including a mounting ring fixed to the top of the support base and surrounding the bottom of the mixing cylinder, multiple guide ribs distributed circumferentially along the mounting ring, guide grooves corresponding to the guide ribs on the outer wall of the mixing cylinder, and magnetic fixing components at the junction of the guide ribs and guide grooves; wherein the leg assemblies are used to adjust the height of the support base. The purpose of this utility model is to provide a mixing device with high efficiency and convenient assembly / disassembly for mixing small quantities of PP granules.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical engineering technology, and specifically refers to a stirring device for a small amount of PP granules. Background Technology

[0002] In the production of plastic products, the uniformity of PP polypropylene granules directly affects the quality of the products. As a key piece of equipment to achieve thorough mixing of PP polypropylene granules, the stirring device plays a crucial role in the pretreatment of PP polypropylene granules and is widely used in product development, formula debugging and small-scale trial production.

[0003] Currently, most existing PP granule mixing devices on the market are large-scale industrial equipment. These devices are mainly designed for mixing large quantities of PP granules and suffer from high energy consumption and bulky size. When dealing with the need to mix small quantities of PP granules, such as in laboratory formulation development or small-batch pilot production, traditional large-scale equipment not only has high operating costs but also suffers from low mixing efficiency and difficulty in quickly cleaning and replacing PP granules. Therefore, existing technology lacks a mixing device specifically designed for mixing small quantities of PP granules, making it difficult to meet the refined and convenient mixing needs of small-scale PP granule mixing in scenarios such as R&D debugging and small-scale production. Utility Model Content

[0004] The purpose of this invention is to provide a stirring device that is efficient in mixing and easy to assemble and disassemble for scenarios involving the mixing of small amounts of PP particles, thereby solving the problems mentioned in the background art.

[0005] The purpose of this invention is achieved as follows: a stirring device for a small amount of PP granules, comprising:

[0006] A mixing cylinder, the axis of which is inclined to a horizontal plane, is equipped with a stirring paddle inside the mixing cylinder;

[0007] The support mechanism includes a support base located below the bottom of the mixing cylinder and support leg assemblies symmetrically connected to both sides of the bottom of the support base. A drive motor that is connected to the stirring paddle is installed on the support base.

[0008] The quick-release mechanism includes a mounting ring platform fixed to the top of the support base and surrounding the bottom of the mixing cylinder, and a plurality of guide sliding ribs distributed circumferentially along the mounting ring platform. The outer wall of the mixing cylinder is provided with guide sliding grooves corresponding to the guide sliding ribs one by one, and the joint area between the guide sliding ribs and the guide sliding grooves is provided with magnetic fixing components.

[0009] The outrigger assembly is used to adjust the height of the support base.

[0010] The present invention is further configured such that the angle between the axis of the mixing cylinder and the horizontal plane is 30°-60°.

[0011] The present invention is further configured such that the outrigger assembly includes:

[0012] The support tube consists of a sleeved inner tube and an outer tube;

[0013] Locking pins are used to pass through the inner and outer tubes.

[0014] The present invention is further configured such that the outer tube and the inner tube are provided with multiple sets of position-corresponding adjustment holes, and the locking pin is selectively inserted into the adjustment holes at different heights.

[0015] The present invention is further provided that the bottom of the support leg assembly is fixedly connected with an anti-slip pad.

[0016] The present invention is further configured such that the magnetic fixing component includes:

[0017] The first magnetic attractor is located at the bottom end of the guide rib;

[0018] The second magnetic attractor is located at the bottom of the guide groove.

[0019] When the guide rib is fully inserted into the guide groove, the first magnetic attractor and the second magnetic attractor attract each other.

[0020] The present invention is further provided that the outer wall of the mixing cylinder is provided with a disassembly handle, and the outer wall of the support base is provided with a handling handle.

[0021] The present invention is further provided with an openable feeding cover at the top opening of the mixing cylinder, and the feeding cover is hinged to the top edge of the mixing cylinder.

[0022] By adopting the above technical solution, the beneficial effects that this utility model can achieve are:

[0023] 1. By using an inclined mixing cylinder in conjunction with an internal stirring paddle, a small amount of PP polypropylene particles are turbulently formed under the drive of a motor. Compared with traditional large-scale equipment, this significantly improves mixing efficiency and uniformity while reducing energy consumption.

[0024] 2. By sliding the guide ribs on the mounting ring with the guide grooves on the outer wall of the mixing cylinder, combined with the magnetic fixing components, the mixing cylinder can be "closed when placed and separated when lifted", which facilitates quick cleaning after small-batch operations and improves the ease of use of the equipment.

[0025] 3. The symmetrically arranged support leg components at the bottom of the support base, combined with anti-slip pads, enhance the stability of the equipment placement; at the same time, the adjustable support legs can adapt to different container heights and tabletops, meeting the needs of various scenarios such as laboratories and workshops. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0027] Figure 2 This is a utility model Figure 1 A schematic diagram of the cross-sectional structure;

[0028] Figure 3 This is an installation diagram of this utility model.

[0029] The attached figures are labeled as follows: 1. Mixing cylinder; 2. Agitator; 3. Support mechanism; 30. Support base; 31. Leg assembly; 310. Support tube; 3100. Inner tube; 3101. Outer tube; 311. Locking pin; 4. Drive motor; 5. Quick release mechanism; 50. Mounting ring platform; 51. Guide rib; 52. Guide groove; 6. Magnetic fixing assembly; 60. First magnetic component; 61. Second magnetic component; 7. Adjustment hole; 8. Anti-slip pad; 9. Disassembly handle; 10. Handling handle; 11. Feeding cover. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. See also: Figure 1-3 :

[0031] Example 1:

[0032] This embodiment provides a stirring device for a small quantity of PP granules, comprising:

[0033] A mixing cylinder 1, the axis of which is inclined to a horizontal plane, is provided with a stirring paddle 2 inside the mixing cylinder 1;

[0034] The support mechanism 3 includes a support base 30 located below the bottom of the mixing cylinder 1 and support leg assemblies 31 symmetrically connected to both sides of the bottom of the support base 30. A drive motor 4 that is connected to the stirring paddle 2 is installed on the support base 30.

[0035] The quick-release mechanism 5 includes a mounting ring platform 50 fixed to the top of the support base 30 and surrounding the bottom of the mixing cylinder 1, and a plurality of guide sliding ribs 51 distributed circumferentially along the mounting ring platform 50. The outer wall of the mixing cylinder 1 is provided with guide sliding grooves 52 corresponding to the guide sliding ribs 51 one by one. The joint area between the guide sliding ribs 51 and the guide sliding grooves 52 is provided with a magnetic fixing component 6.

[0036] The outrigger assembly 31 is used to adjust the height of the support base 30.

[0037] The mixing cylinder 1 is used to contain PP polypropylene granules, which are mixed under the action of the stirring paddle 2. The mixing cylinder 1 is a cylindrical container with its axis inclined to the horizontal plane. It is hollow inside, with an opening at the top for feeding and a closed bottom. The mixing cylinder 1 is located at the top of the entire mixing device through its connection with the quick-release mechanism 5 at the bottom.

[0038] The stirring paddle 2 rotates under the drive of the drive motor 4, agitating the PP polypropylene particles inside the mixing cylinder 1 to generate vortices and achieve thorough mixing. The stirring paddle 2 is typically a blade-shaped structure adapted to the interior of the mixing cylinder 1, and can be connected to the output shaft of the drive motor 4 via a rotating shaft to achieve power transmission.

[0039] The support base 30 is used to fix the drive motor 4, and also provides an installation platform for the mixing cylinder 1. It evenly distributes the weight of the mixing cylinder 1, motor, and other components to the support leg assembly 31, ensuring the overall stability of the device. The support base 30 is typically a block or plate-shaped structure. It has a mounting ring 50 around the bottom of the mixing cylinder 1 at the top, a flat bottom for connecting the support leg assembly 31, and reserved mounting positions for the motor on the sides. It may also have wiring channels or reinforcing ribs inside. The support base 30 is located directly below the bottom of the mixing cylinder 1, in the middle supporting position of the entire device, connecting the mixing cylinder 1 above and the support leg assembly 31 below.

[0040] The outrigger assembly 31 is used to stably support the support base 30 and other components. The outrigger assembly 31 can be designed with an adjustable height to adapt to different work surfaces or receiving containers.

[0041] The quick-release mechanism 5 achieves quick disassembly of the mixing cylinder 1 through the cooperation of the magnetic fixing component 6 with the guide rib 51 and the guide groove 52.

[0042] The mounting ring 50 serves as the connection base between the mixing cylinder 1 and the support base 30. It is fixed to the top of the support base 30, providing installation positioning for the mixing cylinder 1 and bearing the weight of the mixing cylinder 1 and its internal PP polypropylene granules. Simultaneously, it cooperates with the guide ribs 51 to achieve rapid installation and positioning of the mixing cylinder 1. The mounting ring 50 has a ring-shaped protrusion structure, with an inner diameter slightly larger than the outer diameter of the bottom of the mixing cylinder 1. Multiple guide ribs 51 are evenly distributed along the circumference on the top plane. The bottom of the mounting ring 50 can be fixedly connected to the support base 30 by bolts or welding; the top 50 slides with the guide grooves 52 on the outer wall of the mixing cylinder 1 through the guide ribs 51, thus facilitating the installation of the mixing cylinder 1.

[0043] Guide ribs 51 are distributed circumferentially along the mounting ring 50, serving as guide tracks for the mixing cylinder 1 and ensuring quick and accurate docking of the mixing cylinder 1 with the support base 30. Simultaneously, they cooperate with the magnetic fixing assembly 6 to limit the displacement of the mixing cylinder 1 during operation, ensuring connection stability. Guide ribs 51 are typically elongated protruding structures with rectangular or trapezoidal cross-sections, smooth surfaces, and lengths adapted to the guide grooves 52 of the mixing cylinder 1, evenly arranged along the circumference of the mounting ring 50. Guide ribs 51 and the mounting ring 50 can be connected by welding, embedded fixing, or integral molding processes to ensure they do not loosen during frequent disassembly and assembly.

[0044] The guide groove 52 is formed at the bottom of the outer wall of the mixing cylinder 1, cooperating with the guide rib 51 to provide a precise guiding path for the installation of the mixing cylinder 1. Under the action of the magnetic fixing component 6, it forms a stable connection structure with the guide rib 51; at the same time, it allows the mixing cylinder 1 to be quickly disassembled, facilitating equipment cleaning and maintenance. The guide groove 52 is a long strip-shaped groove with a cross-sectional shape matching the guide rib 51. The guide groove 52 is distributed around the bottom of the outer wall of the mixing cylinder 1, corresponding one-to-one with the guide rib 51 on the mounting ring 50 and precisely matched in position. The guide groove 52 and the mixing cylinder 1 are an integral structure.

[0045] The magnetic fixing component 6 is used to firmly fix the mixing cylinder 1 and the support base 30 by magnetic attraction after the guide rib 51 is fully inserted into the guide groove 52, so as to prevent the mixing cylinder 1 from loosening; at the same time, it is easy to disassemble and realize quick assembly and disassembly.

[0046] In this embodiment, the operator first puts PP polypropylene granules into the mixing cylinder 1 through the top opening, and starts the drive motor 4 mounted on the support base 30. The drive motor 4 drives the stirring paddle 2 inside the mixing cylinder 1 to rotate through the transmission components. Because the axis of the mixing cylinder 1 is inclined, the rotation of the stirring paddle 2 causes the PP polypropylene granules to generate vortices inside the cylinder. Under the combined action of gravity and centrifugal force, the PP polypropylene granules are fully tumbled and mixed, effectively improving the stirring efficiency for a small amount of PP polypropylene granules.

[0047] When it is necessary to disassemble the mixing cylinder 1 for cleaning or to replace the PP polypropylene granules, pull the mixing cylinder 1 upwards to overcome the magnetic force of the magnetic fixing component 6, causing the guide rib 51 to disengage from the guide groove 52, and the mixing cylinder 1 can be quickly removed. During installation, align the guide groove 52 at the bottom of the mixing cylinder 1 with the guide rib 51 on the mounting ring 50 of the support base 30, and slide it down along the guide rib 51. When the guide rib 51 is fully inserted into the guide groove 52, the magnetic fixing component 6 will firmly fix the mixing cylinder 1 to the support base 30 through magnetic attraction.

[0048] The support leg assembly 31 of the support mechanism 3 can be designed with adjustable height to allow the mixing device to be stably placed on the ground or table at different heights, depending on the usage scenario.

[0049] Example 2:

[0050] This embodiment provides a stirring device for a small amount of PP granules, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0051] The angle between the axis of the mixing cylinder 1 and the horizontal plane is 30°-60°.

[0052] In this embodiment, the axis of the mixing cylinder 1 is set at an angle of 30°-60° to the horizontal plane, aiming to improve the mixing effect by optimizing the movement trajectory of the PP polypropylene particles. When the mixing cylinder 1 is tilted at an angle of 30°-60°, this angle allows the PP polypropylene particles to slide down naturally under gravity and also tumble laterally using centrifugal force under the action of the stirring paddle 2, thus forming a unique vortex motion mode. Compared to vertical or small-angle tilt designs, this angle range ensures that a small amount of PP polypropylene particles are fully dispersed and circulated within the cylinder, avoiding dead zones or accumulation due to the small quantity of PP polypropylene particles. Without increasing energy consumption, this significantly improves mixing uniformity and efficiency, meeting the needs of small-batch production for refined mixing.

[0053] Example 3:

[0054] This embodiment provides a stirring device for a small amount of PP granules, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0055] The outrigger assembly 31 includes:

[0056] The support tube 310 is composed of a sleeved inner tube 3100 and an outer tube 3101;

[0057] Locking pin 311 is used to pass through the inner tube 3100 and the outer tube 3101.

[0058] The support tube 310 is composed of an inner tube 3100 and an outer tube 3101 connected together. By adjusting the telescopic length of the inner tube 3100 within the outer tube 3101, the overall height of the support mechanism 3 can be flexibly adjusted to adapt to workbenches or receiving containers of different heights, while providing stable support for the device. The outer tube 3101 is typically a hollow tubular structure with a smooth inner wall; the outer diameter of the inner tube 3100 is slightly smaller than the inner diameter of the outer tube 3101, allowing it to slide inside the outer tube 3101. The support tubes 310 are symmetrically distributed on both sides of the bottom of the support base 30, directly contacting the ground or workbench. The top of the outer tube 3101 is fixedly connected to the bottom of the support base 30 by welding or bolts; the inner tube 3100 and the outer tube 3101 are fixed in position by locking pins 311.

[0059] Example 4:

[0060] This embodiment provides a stirring device for a small amount of PP granules, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0061] The outer tube 3101 and the inner tube 3100 are provided with multiple sets of adjustment holes 7 corresponding to different positions, and the locking pin 311 is selectively inserted into the adjustment holes 7 at different heights.

[0062] In this embodiment, the outer tube 3101 and inner tube 3100 are provided with multiple sets of corresponding adjustment holes 7, and the locking pins 311 are selectively inserted to flexibly adapt to diverse working environments. Different sizes of receiving containers in the laboratory have varying heights, and the workbenches in the workshop also differ in height. This design allows for quick adjustment of the height of the support leg assembly 31, ensuring the mixing device remains horizontal and stable. This guarantees that the small amount of PP polypropylene particles in the mixing cylinder 1 are evenly stressed during mixing, preventing the accumulation of PP polypropylene particles or insufficient mixing due to device tilting. Simultaneously, adapting to different heights allows operators to easily adjust the equipment position according to their own height and operating habits. For example, in a laboratory setting, the support legs can be lowered to match the height of the experimental workbench, avoiding the need for operators to bend over to add materials; in a production setting, the support legs can be raised to connect with large receiving containers, enabling direct pouring and conveying of the mixed particles.

[0063] In summary, the design of this embodiment can improve the ease and comfort of operation, and meet the needs of small-batch, multi-scenario mixing operations.

[0064] Example 5:

[0065] This embodiment provides a stirring device for a small amount of PP granules, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0066] The bottom of the support leg assembly 31 is fixed with an anti-slip foot pad 8.

[0067] In this embodiment, the anti-slip pads 8 fixed to the bottom of the support leg assembly 31 can be made of rubber, with a wavy or grid-like raised bottom to increase the contact friction with the placement surface and prevent the mixing device from shifting or tipping over due to vibration during operation. The top can be connected to the bottom of the inner tube 3100 in the support leg assembly 31 by means of embedded slots or bolts to ensure stability and prevent it from falling off. This design effectively enhances the stability of the device placement, avoids uneven mixing of PP polypropylene particles in the mixing cylinder 1 due to sliding, and reduces noise and vibration interference during the mixing process, providing reliable support for mixing small batches of PP polypropylene particles.

[0068] Example 6:

[0069] This embodiment provides a stirring device for a small amount of PP granules, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0070] The magnetic fixing component 6 includes:

[0071] The first magnetic attractor 60 is disposed at the bottom end of the guide rib 51;

[0072] The second magnetic suction element 61 is disposed at the bottom of the guide groove 52;

[0073] When the guide rib 51 is fully inserted into the guide groove 52, the first magnetic attractor 60 and the second magnetic attractor 61 attract each other.

[0074] The first magnetic attractor 60 is installed at the bottom of the guide rib 51. When the mixing cylinder 1 is installed in place, it magnetically attracts the second magnetic attractor 61, firmly fixing the mixing cylinder 1 to the support base 30 to prevent loosening due to vibration during mixing. Disassembly requires overcoming the magnetic force for quick separation. The first magnetic attractor 60 and the second magnetic attractor 61 are typically block-shaped or cylindrical. When the first magnetic attractor 60 is a neodymium iron boron permanent magnet, the second magnetic attractor 61 can be a magnetically conductive stainless steel plate that attracts the neodymium iron boron permanent magnet. The first magnetic attractor 60 can be tightly bonded to the bottom of the guide rib 51 by adhesive or embedding to ensure it does not fall off during attraction. The connection method of the second magnetic attractor 61 can be the same as that of the first magnetic attractor 60, connecting it to the bottom of the guide groove 52.

[0075] In this embodiment, traditional bolt fixing requires tools and disassembly is time-consuming, while the magnetic quick-release design of this invention enables separation of the mixing cylinder through tool-free, one-handed operation, which is especially suitable for scenarios where small-batch operations require frequent cleaning.

[0076] When the mixing cylinder 1 is installed, the guide chute 52 slides down along the guide rib 51, and the second magnetic suction member 61 approaches the first magnetic suction member 60 along with the guide chute 52. When the guide chute 52 is fully inserted into the bottom of the guide rib 51, the distance between the second magnetic suction member 61 and the first magnetic suction member 60 shortens to the range of magnetic force, and the two attract each other, generating a strong adsorption force that firmly fixes the mixing cylinder 1 to the support base 30. This adsorption force is sufficient to resist the impact of PP polypropylene particles and equipment vibration during the mixing process, ensuring stable operation of the device.

[0077] When disassembling the mixing cylinder 1, the operator pulls the mixing cylinder 1 upwards, applying external force to overcome the attraction force of the magnetic fixing component 6, causing the second magnetic component 61 to separate from the first magnetic component 60, and the guide slide 52 to disengage from the guide slide rib 51, thereby achieving rapid disassembly of the mixing cylinder 1. The entire process requires no tools, relying solely on magnetic attraction and detachment, simplifying the operation.

[0078] Example 7:

[0079] This embodiment provides a stirring device for a small amount of PP granules, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0080] The mixing cylinder 1 is provided with a disassembly handle 9 on its outer wall, and the support base 30 is provided with a handling handle 10 on its outer wall.

[0081] In this embodiment, the outer wall of the mixing cylinder 1 can be fixed with a disassembly handle 9 by bolts or welding, which allows operators to quickly disassemble the mixing cylinder 1 by pulling the disassembly handle 9 when cleaning or replacing PP polypropylene granules, thus concentrating force to overcome the attraction between the first magnetic component 60 and the second magnetic component 61. This avoids the inconvenience or safety hazards caused by uneven force during manual operation. The handling handle 10, which is fixed to the outer wall of the support base 30 by bolts or welding, provides a point of leverage for the overall movement of the device. Whether moving between laboratory benches or flexibly deploying at different workstations in the workshop, operators can easily lift and move the device using the handling handle 10, significantly improving the mobility and ease of use of the equipment and meeting the needs of flexible operation for small-batch production.

[0082] Example 8:

[0083] This embodiment provides a stirring device for a small amount of PP granules, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0084] The mixing cylinder 1 is provided with an openable feeding cover 11 at the top opening, and the feeding cover 11 is hinged to the top edge of the mixing cylinder 1.

[0085] In this embodiment, a hinged feeding cover 11, which can be opened and closed, is provided at the top opening of the mixing cylinder 1 by means of bolts or other means. This is intended to provide convenience and protection for the feeding and mixing process of PP polypropylene granules. During feeding, the feeding cover 11 can be easily opened to accurately add PP polypropylene granules and additives. During the stirring process, closing the feeding cover 11 can effectively prevent PP polypropylene granules from splashing out due to the centrifugal force generated by stirring, avoiding waste of PP polypropylene granules and environmental cleanliness problems. At the same time, it reduces the risk of foreign objects falling into the mixing cylinder 1 and ensures the purity of the mixed PP polypropylene granules. In addition, the hinged design makes the opening and closing of the feeding cover 11 smooth and convenient, adapting to the needs of frequent addition and rapid stirring of small batches of PP polypropylene granules.

[0086] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A stirring device for a small quantity of PP granules, characterized in that, include: A mixing cylinder (1) has its axis inclined to a horizontal plane, and a stirring paddle (2) is provided inside the mixing cylinder (1). The support mechanism (3) includes a support base (30) located below the bottom of the mixing cylinder (1) and support leg assemblies (31) symmetrically connected to both sides of the bottom of the support base (30). A drive motor (4) connected to the stirring paddle (2) is installed on the support base (30). The quick-release mechanism (5) includes a mounting ring platform (50) fixed to the top of the support base (30) and surrounding the bottom of the mixing cylinder (1), and a plurality of guide ribs (51) distributed circumferentially along the mounting ring platform (50). The outer wall of the mixing cylinder (1) is provided with guide grooves (52) corresponding to the guide ribs (51) one by one. The joint area between the guide ribs (51) and the guide grooves (52) is provided with magnetic fixing components (6). The outrigger assembly (31) is used to adjust the height of the support base (30).

2. The stirring device for a small quantity of PP granules according to claim 1, characterized in that, The angle between the axis of the mixing cylinder (1) and the horizontal plane is 30°-60°.

3. The stirring device for a small quantity of PP granules according to claim 1, characterized in that, The outrigger assembly (31) includes: The support tube (310) is composed of a sleeved inner tube (3100) and an outer tube (3101); A locking pin (311) is used to pass through the inner tube (3100) and the outer tube (3101).

4. A stirring device for a small quantity of PP granules according to claim 3, characterized in that, The outer tube (3101) and inner tube (3100) are provided with multiple sets of adjustment holes (7) corresponding to different positions, and the locking pin (311) is selectively inserted into the adjustment holes (7) at different heights.

5. A stirring device for a small quantity of PP granules according to claim 3, characterized in that, The bottom of the outrigger assembly (31) is fixed with an anti-slip pad (8).

6. A stirring device for a small quantity of PP granules according to claim 1, characterized in that, The magnetic fixing assembly (6) includes: The first magnetic suction element (60) is disposed at the bottom end of the guide rib (51); The second magnetic suction element (61) is disposed at the bottom of the guide groove (52); When the guide rib (51) is fully inserted into the guide groove (52), the first magnetic attractor (60) and the second magnetic attractor (61) attract each other.

7. A stirring device for a small quantity of PP granules according to claim 1, characterized in that, The mixing cylinder (1) is provided with a disassembly handle (9) on its outer wall, and the support base (30) is provided with a handling handle (10) on its outer wall.

8. A stirring device for a small quantity of PP granules according to claim 1, characterized in that, The mixing cylinder (1) has an openable feeding cover (11) at the top opening, and the feeding cover (11) is hinged to the top edge of the mixing cylinder (1).

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