Mixing structure of double-reflux continuous mixer

Abstract

This invention discloses a mixing structure for a dual-recirculation continuous mixer, comprising a mixing tank with multiple first spiral guide vanes on its inner wall. The mixing tank also contains an isolation ring with a diameter smaller than the inner diameter of the first spiral guide vanes. The inner wall of the isolation ring has multiple second spiral guide vanes, with the spiral directions of the second and first spiral guide vanes opposite. When the mixing structure of this dual-recirculation continuous mixer rotates forward, the second spiral guide vanes transport and mix the material from the right end to the left end of the mixing tank, while the first spiral guide vanes transport and mix the material from the left end to the right end. The isolation ring separates a portion of the first and second spiral guide vanes, preventing interference between their respective mixing and conveying paths. The material within the isolation ring can rotate and revolve, as can the material between the inner wall of the mixing tank and the outer wall of the isolation ring, achieving a multi-dimensional mixing effect, resulting in more uniform material mixing and higher mixing efficiency.

Description

Technical Field

[0001] This invention relates to the field of mixing equipment technology, and specifically to a mixing structure of a dual-recirculation continuous mixer. Background Technology

[0002] Mixers are used to uniformly mix two or more materials. For example, Chinese utility model patent application CN202322481198.7, filed by the applicant on September 13, 2023, discloses a material convection device for a mixer, including a cylinder with a mixing chamber inside. The cylinder rotates around its central axis under the drive of a driving device. A first pushing and stirring device and a second pushing and stirring device are arranged within the mixing chamber. The first pushing and stirring device is located on one side of the center of the mixing chamber, and the second pushing and stirring device is located on one side of the outer circumference of the mixing chamber. The first and second pushing and stirring devices axially push the material, with the direction of movement being opposite to that of the second pushing and stirring device. A channel is provided between the first and second pushing and stirring devices for material passage. However, the mixing effect of this type of mixer is unsatisfactory. Therefore, this invention aims to further improve the mixer by providing a mixing structure for a double-recirculation continuous mixer that achieves more uniform mixing and higher mixing efficiency. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a mixing structure for a dual-recirculation continuous mixer that provides more uniform mixing and higher mixing efficiency.

[0004] Therefore, the present invention is implemented using the following technical solution:

[0005] A mixing structure for a dual-reflux continuous mixer includes a mixing tank, characterized in that: the right end of the mixing tank is connected to an inlet cone, and the left end is connected to an outlet cone; the inlet cone has an inlet, and the outlet cone has an outlet; the inner wall of the mixing tank is provided with multiple first spiral guide vanes, and the mixing tank is also provided with an isolation ring with a diameter smaller than the inner diameter of the first spiral guide vanes; the inner wall of the isolation ring is provided with multiple second spiral guide vanes, and the spiral directions of the second spiral guide vanes and the first spiral guide vanes are opposite.

[0006] Furthermore, the isolation ring and the first spiral guide vane are welded together by multiple connecting rods, the first spiral guide vane is welded to the inner wall of the mixing tank, and the second spiral guide vane is welded to the inner wall of the isolation ring.

[0007] Furthermore, the first and second spiral guide vanes extend to the left and right ends of the mixing tank, with 2-4 first spiral guide vanes and 3-6 second spiral guide vanes.

[0008] Furthermore, the inner wall of the feeding cone is equally divided into multiple stirring blades, which extend from the feed inlet to the left end of the feeding cone. The inner wall of the discharge cone is equally divided into multiple guide plates, which extend from the right end of the discharge cone to the discharge outlet. The guide plates have an L-shaped cross-section and form a feeding trough with the discharge cone.

[0009] Furthermore, when the mixing tank rotates, the stirring blades drive the material to form a first dimensional mixing trajectory in the axial and radial directions. At the same time, the material falls into the mixing tank from the feed cone due to its own weight, and the material on the right side of the isolation ring rolls downwards due to its own weight, forming a second dimensional mixing trajectory.

[0010] Furthermore, when the mixing tank rotates, the first spiral guide vane drives the material to be mixed and conveyed from the right end of the mixing tank to the left end of the mixing tank or from the left end of the mixing tank to the right end of the mixing tank, forming a third-dimensional mixing trajectory. At the same time, the material forms a fourth-dimensional mixing trajectory in the axial and radial directions within the channel between the inner wall of the mixing tank and the outer wall of the isolation ring.

[0011] Furthermore, when the mixing tank rotates, the second spiral guide vane drives the material to be mixed and conveyed from the left end to the right end of the mixing tank or from the right end to the left end of the mixing tank, forming a fifth-dimensional mixing trajectory. At the same time, the material forms a sixth-dimensional mixing trajectory in the axial and radial directions within the isolation ring.

[0012] Furthermore, when the mixing tank rotates forward, the guide vanes drive the material to form a seventh-dimensional mixing trajectory in the axial and radial directions. At the same time, the material falls into the mixing tank from the discharge cone due to its own weight, and the material on the left side of the isolation ring rolls downward due to its own weight to form an eighth-dimensional mixing trajectory. When the mixing tank rotates in reverse, the material is transported to the left end of the mixing tank by the first spiral guide vanes and enters the feeding trough to move towards the discharge port for discharge.

[0013] Furthermore, the feed cone and discharge cone are detachably connected to the mixing tank by several bolts.

[0014] After adopting the above technical solution, the material enters the mixing tank from the feed inlet of the feed cone, is mixed by the first and second spiral guide vanes, and is discharged from the discharge outlet of the discharge cone. When the mixing tank rotates clockwise, the second spiral guide vanes transport the material from the right end to the left end of the mixing tank, and the first spiral guide vanes transport the material from the left end to the right end of the mixing tank. The isolation ring can separate part of the first and second spiral guide vanes, which not only prevents the mixing and conveying paths of the first and second spiral guide vanes from interfering with each other, but also allows the material within the isolation ring to move axially and radially (rotate and revolve). At the same time, the material between the inner wall of the mixing tank and the outer wall of the isolation ring can also move axially and radially (rotate and revolve), so as to achieve a multi-dimensional mixing effect, making the material mixing more uniform and the mixing efficiency higher. Attached Figure Description

[0015] The present invention includes the following figures:

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a side view of the structure of the present invention;

[0018] Figure 3 for Figure 2 Sectional view along the DD direction;

[0019] Figure 4 for Figure 2 EE-directed sectional view;

[0020] Figure 5 This is a cross-sectional view of the discharge cone in this invention;

[0021] Figure 6 This is a schematic diagram of the mixed trajectory of each dimension when the hybrid structure rotates forward in this invention.

[0022] Reference numerals: 1. Mixing tank; 2. Feed cone; 3. Discharge cone; 4. Feed inlet; 5. Discharge outlet; 6. First spiral guide vane; 7. Isolation ring; 8. Second spiral guide vane; 9. Connecting rod; 10. Stirring blade; 11. Guide vane; 12. Feed trough; 13. First latitude mixing trajectory; 14. Second latitude mixing trajectory; 15. Third latitude mixing trajectory; 16. Fourth latitude mixing trajectory; 17. Fifth latitude mixing trajectory; 18. Sixth latitude mixing trajectory; 19. Seventh latitude mixing trajectory; 20. Eighth latitude mixing trajectory; 21. Bolt. Detailed Implementation

[0023] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0024] See attached document Figure 1-5 As shown, the mixing structure of a double-reflux continuous mixer provided by the present invention includes a mixing tank 1. The mixing tank 1 has a feed cone 2 connected to its right end and a discharge cone 3 connected to its left end. The feed cone 2 has a feed inlet 4, and the discharge cone 3 has a discharge outlet 5. The inner wall of the mixing tank 1 is provided with multiple first spiral guide vanes 6, and the mixing tank 1 also has an isolation ring 7 with a diameter smaller than the inner diameter of the first spiral guide vanes 6. The inner wall of the isolation ring 7 is provided with multiple second spiral guide vanes 8, the spiral directions of the second spiral guide vanes 8 and the first spiral guide vanes 6 being opposite. The isolation ring 7 and the first spiral guide vanes 6 are welded and fixed together by multiple connecting rods 9. The first spiral guide vanes 6 are welded and fixed to the inner wall of the mixing tank 1. The spiral guide vane 8 is fixed to the inner wall of the isolation ring 7 by welding. The first spiral guide vane 6 and the second spiral guide vane 8 extend to the left and right ends of the mixing tank 1. There are two first spiral guide vanes 6 and three second spiral guide vanes 8. The inner wall of the feeding cone 2 is equally divided with multiple stirring blades 10. The stirring blades 10 extend from the inlet 4 to the left end of the feeding cone 2. The inner wall of the discharge cone 3 is equally divided with multiple guide plates 11. The guide plates 11 extend from the right end of the discharge cone 3 to the discharge port 5. The cross section of the guide plate 11 is L-shaped. The guide plates 11 and the discharge cone 3 form a feeding groove 12. The feeding cone 2 and the discharge cone 3 are detachably connected to the mixing tank 1 by several bolts 21.

[0025] In this embodiment, the material enters the mixing tank 1 through the inlet 4 of the feeding cone 2, and after being mixed by the first spiral guide vane 6 and the second spiral guide vane 8, it is discharged from the outlet 5 of the discharge cone 3. When the mixing tank 1 rotates clockwise, the second spiral guide vane 8 mixes and conveys the material from the right end to the left end of the mixing tank 1, and the first spiral guide vane 6 mixes and conveys the material from the left end to the right end of the mixing tank 1. The isolation ring 7 can separate part of the first spiral guide vane 6 and the second spiral guide vane 8, so that the mixing and conveying paths of the first spiral guide vane 6 and the second spiral guide vane 8 do not interfere with each other. Moreover, the material in the isolation ring 7 can perform axial and radial (rotation and revolution) movements. At the same time, the material between the inner wall of the mixing tank 1 and the outer wall of the isolation ring 7 can also perform axial and radial (rotation and revolution) movements, so as to achieve a multi-dimensional mixing effect, making the material mixing more uniform and the mixing efficiency higher.

[0026] Combination Figure 6As shown, when the mixing tank 1 rotates, the stirring blades 10 drive the material to form a first dimensional mixing trajectory 13 in the axial and radial directions (rotation and revolution). Simultaneously, the material falls into the mixing tank 1 from the feed cone 2 due to its own weight. The material on the right side of the isolation ring 7 rolls downwards due to its own weight, forming a second dimensional mixing trajectory 14. When the mixing tank 1 rotates, the first spiral guide blades 6 drive the material to be mixed and conveyed from the right end of the mixing tank 1 to the left end or from the left end of the mixing tank 1 to the right end, forming a third dimensional mixing trajectory 15. Simultaneously, the material undergoes axial and radial (rotation and revolution) movements within the channel between the inner wall of the mixing tank 1 and the outer wall of the isolation ring 7, forming a fourth dimensional mixing trajectory. Latitude mixing trajectory 16: When the mixing tank 1 rotates, the second spiral guide vane 8 drives the material to be mixed and conveyed from the left end of the mixing tank 1 to the right end of the mixing tank 1 or from the right end of the mixing tank 1 to the left end of the mixing tank 1, forming the fifth latitude mixing trajectory 17. At the same time, the material performs axial and radial (rotation and revolution) movements within the isolation ring 7, forming the sixth latitude mixing trajectory 18. When the mixing tank 1 rotates clockwise, it cooperates with the guide plate 11 to drive the material to perform axial and radial (rotation and revolution) movements, forming the seventh latitude mixing trajectory 19. At the same time, the material falls into the mixing tank 1 from the discharge cone 3 due to its own weight, and the material on the left side of the isolation ring 7 rolls downwards due to its own weight, forming the eighth latitude mixing trajectory 20.

[0027] In this embodiment, when the mixing tank 1 rotates clockwise, the stirring blades 10 drive the material to move axially and radially (rotate and revolve). At the same time, the material falls into the mixing tank 1 from the feed cone 2 due to its own weight. The second spiral guide blades 8 mix and convey the material from the right end to the left end of the mixing tank 1, and the first spiral guide blades 6 mix and convey the material from the left end to the right end of the mixing tank 1, realizing the radial flow and up-and-down rotation of the material. The guide plate 11 drives the material to move axially and radially (rotate and revolve) (the guide plate 11 does not discharge when the mixing tank 1 rotates clockwise). At the same time, the material falls into the mixing tank 1 from the discharge cone 3 due to its own weight for continued mixing. When the mixing tank 1 rotates counterclockwise, the second spiral guide blades 8 mix and convey the material from the left end to the right end of the mixing tank 1, and the first spiral guide blades 6 mix and convey the material from the right end to the left end of the mixing tank 1. The material enters the feeding trough 12 and moves to the discharge port 5 for discharge.

Claims

1. A mixing structure for a dual-reflux continuous mixer, comprising a mixing tank, characterized in that: The mixing tank has a feed cone connected to its right end and a discharge cone connected to its left end. The feed cone has a feed inlet and the discharge cone has a discharge outlet. The inner wall of the mixing tank has multiple first spiral guide vanes, which extend to the left and right ends of the mixing tank. The mixing tank also has an isolation ring with a diameter smaller than the inner diameter of the first spiral guide vanes. The inner wall of the isolation ring has multiple second spiral guide vanes, which extend beyond the isolation ring to the left and right ends of the mixing tank. The spiral directions of the second spiral guide vanes and the first spiral guide vanes are opposite. The inner wall of the feed cone has multiple stirring vanes evenly distributed around its circumference, which extend from the feed inlet to the left end of the feed cone. The inner wall of the discharge cone has multiple guide vanes evenly distributed around its circumference, which extend from the right end of the discharge cone to the discharge outlet. The guide vanes have an L-shaped cross-section and form a feeding trough with the discharge cone.

2. The mixing structure of a dual-recirculation continuous mixer according to claim 1, characterized in that: The isolation ring and the first spiral guide vane are fixed by welding multiple connecting rods. The first spiral guide vane is fixed to the inner wall of the mixing tank by welding, and the second spiral guide vane is fixed to the inner wall of the isolation ring by welding.

3. The mixing structure of a dual-recirculation continuous mixer according to claim 2, characterized in that: The number of the first spiral guide vanes is 2-4, and the number of the second spiral guide vanes is 3-6.

4. The mixing structure of a dual-recirculation continuous mixer according to claim 1, 2, or 3, characterized in that: When the mixing tank rotates, the stirring blades drive the material to form a first-dimensional mixing trajectory in the axial and radial directions. At the same time, the material falls into the mixing tank from the feed cone due to its own weight, and the material on the right side of the isolation ring rolls downwards due to its own weight, forming a second-dimensional mixing trajectory.

5. The mixing structure of a dual-recirculation continuous mixer according to claim 4, characterized in that: When the mixing tank rotates, the first spiral guide vane drives the material to be mixed and conveyed from the right end of the mixing tank to the left end or from the left end of the mixing tank to the right end, forming a third-dimensional mixing trajectory. At the same time, the material forms a fourth-dimensional mixing trajectory in the axial and radial directions in the channel between the inner wall of the mixing tank and the outer wall of the isolation ring.

6. The mixing structure of a dual-recirculation continuous mixer according to claim 5, characterized in that: When the mixing tank rotates, the second spiral guide vane drives the material to be mixed and conveyed from the left end to the right end of the mixing tank or from the right end to the left end of the mixing tank, forming a fifth-dimensional mixing trajectory. At the same time, the material forms a sixth-dimensional mixing trajectory in the axial and radial directions within the isolation circle.

7. The mixing structure of a dual-recirculation continuous mixer according to claim 6, characterized in that: When the mixing tank rotates forward, the guide vanes drive the material to form a seventh-dimensional mixing trajectory in the axial and radial directions. At the same time, the material falls into the mixing tank from the discharge cone due to its own weight. The material on the left side of the isolation ring rolls downward due to its own weight, forming an eighth-dimensional mixing trajectory. When the mixing tank rotates in reverse, the material is transported to the left end of the mixing tank by the first spiral guide vanes and enters the feeding trough to move towards the discharge port for discharge.

8. The mixing structure of a dual-recirculation continuous mixer according to claim 1, 2, or 3, characterized in that: The feed cone and discharge cone are detachably connected to the mixing tank by several bolts.

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