A double-screw mixer with convenient feeding

Abstract

The present invention relates to the technical field of mixers, and proposes a double-screw mixer that is convenient for feeding. The first screw shaft has a first main shaft and a first screw, and revolves and rotates around the center line of the machine body. The second screw shaft has a second main shaft and a second screw, and revolves and rotates around the center line of the machine body. The revolution speed of the second screw shaft is greater than the revolution speed of the first screw shaft. After the second screw shaft revolves, it approaches or moves away from the first screw shaft. After the second screw shaft approaches the first screw shaft, the second screw and the first screw are intertwined with each other, and the second screw approaches the first main shaft, and the first screw approaches the second main shaft, and they are used to clean up agglomerated materials from each other. Through the above technical solution, the problem that traditional double-screw mixers are easy to stick to the shaft and difficult to clean, which reduces production continuity and stability, is solved.

Description

Technical Field

[0001] The invention relates to the technical field of mixers, and in particular to a double-screw mixer with convenient feeding. Background Art

[0002] In the practical application of traditional twin-screw mixers, shaft sticking has long been a persistent problem that plagues production efficiency and product quality. During operation, materials tend to adhere to and accumulate on the screw shaft due to various factors. For example, when handling sticky materials, such as sauce ingredients in food processing or highly viscous colloids in the chemical industry, the materials can tightly adhere to the shaft surface, gradually forming a thick layer over time, ultimately leading to shaft sticking.

[0003] Because the accumulated material is tightly adhered and may even have hardened, conventional cleaning tools are difficult to effectively remove. Manual cleaning is not only labor-intensive and time-consuming, but also inefficient. Improper operation by the cleaning operator can damage the screw shaft surface, affecting the equipment's lifespan and accuracy. Mechanically assisted cleaning, such as small scrapers, also presents challenges such as incomplete cleaning and difficulty reaching complex corners. Furthermore, the cleaning process requires downtime, which disrupts the production line, increases production costs, reduces production continuity and stability, and negatively impacts the company's economic benefits and production plans. Summary of the Invention

[0004] The present invention provides a double-screw mixer with convenient feeding, which solves the problems of traditional double-screw mixers that are easy to stick to the shaft and difficult to clean, thereby reducing production continuity and stability.

[0005] The technical solution of the present invention is as follows: A double-screw mixer with convenient feeding, comprising:

[0006] body;

[0007] a first screw shaft having a first main axis and a first helix, and revolving and rotating around the center line of the body;

[0008] a second helical shaft, the second helical shaft having a second main axis and a second helix, and revolving and rotating around the centerline of the body;

[0009] The orbital angular velocity of the second spiral shaft is greater than the orbital velocity of the first spiral shaft. After the second spiral shaft orbits, it approaches or moves away from the first spiral shaft. After the second spiral shaft approaches the first spiral shaft, the second spiral and the first spiral are intertwined with each other. The second spiral is close to the first main shaft, and the first spiral is close to the second main shaft, which are used to clean up agglomerated materials from each other.

[0010] Optionally, the first helical shaft and the second helical shaft have the same rotational angular velocity; further comprising:

[0011] a first rotating shaft, the first rotating shaft being rotatably arranged relative to the machine body, with its axis being perpendicular to a horizontal plane;

[0012] a first support rod, the first support rod being arranged on the first rotating shaft, and the first spiral shaft being rotatably arranged on the first support rod;

[0013] a connecting disk, the connecting disk being disposed on the first rotating shaft, rotating synchronously with the first rotating shaft, and spaced apart from the first supporting rod in a height direction;

[0014] a second support rod, the second support rod being rotatably arranged relative to the connecting disk, the second screw shaft being rotatably arranged on the second support rod, and the length of the second support rod being shorter than the length of the first support rod;

[0015] Optionally, the second support rod is rotatably arranged relative to the connecting disk; further comprising:

[0016] a first gear, the first gear being disposed on the machine body;

[0017] a second gear rotatably disposed on the body and meshing with the first gear;

[0018] a third gear, the third gear being rotatably disposed on the body and being coaxial with the second gear;

[0019] a second rotating shaft, one end of the second rotating shaft being disposed on the second gear and the other end being disposed on the third gear, so that the second gear and the third gear rotate synchronously;

[0020] a fourth gear, the fourth gear being disposed on the second support rod and meshing with the third gear;

[0021] A third rotating shaft, one end of which is arranged on the fourth gear, and the other end of which is arranged on the second support rod, so that the fourth gear and the second support rod rotate synchronously.

[0022] Optionally, the number of teeth of the second gear is smaller than the number of teeth of the first gear;

[0023] The number of teeth of the fourth gear is less than or equal to the number of teeth of the third gear.

[0024] Optionally, the third rotating shaft is parallel to the first rotating shaft, and is located on one side of the first rotating shaft, eccentrically arranged relative to the first rotating shaft. The third rotating shaft is located on a side of the first support rod that is away from the first spiral shaft in the horizontal direction.

[0025] Optionally, the connecting plate has a first through hole, and the third rotating shaft passes through the first through hole to be connected to the second supporting rod.

[0026] Optionally, it also includes:

[0027] A gear box is rotatably arranged on the machine body, and the first gear, the second gear, the third gear, the fourth gear and the second rotating shaft are all located in the gear box.

[0028] Optionally, the gear box has a second through hole, and the third rotating shaft is connected to the second support rod through the first through hole and the second through hole.

[0029] Optionally, the body has a tapered portion; the first spiral shaft is arranged tilted; and the tilt angle of the first spiral shaft is equal to the taper of the tapered portion.

[0030] Optionally, the inclination angle of the second spiral axis is greater than the taper of the conical portion, and the distance from the second spiral to the first main axis gradually decreases from the upper part of the body to the lower part of the body, and the distance from the first spiral to the second main axis gradually decreases.

[0031] The working principle and beneficial effects of the present invention are:

[0032] In this invention, the first screw shaft stirs the material while it orbits and rotates around the centerline of the machine body. The orbital movement of the first screw shaft expands the mixing area, while the rotation lifts the material along the spiral line, increasing collision and mixing between the materials, effectively improving the uniformity of the mixing.

[0033] The second spiral shaft has a faster revolution speed. Preferably, the revolution speed of the second spiral shaft is 2 times or more than that of the first spiral shaft, that is, when the first spiral shaft revolves once, the second spiral shaft revolves twice or more. In this way, the first spiral shaft can meet the second spiral shaft during the revolution. Preferably, the first spiral and the second spiral are identical in structure, with the same pitch and spiral length, so that the height of the first spiral shaft and the second spiral shaft can be adjusted more conveniently before work, so that when the first spiral shaft and the second spiral shaft meet, the first spiral and the second spiral can be staggered to avoid interference. The second spiral and the first spiral are staggered with each other, and are close to each other's main shaft. On the one hand, it can clean up the agglomerated materials on the main shaft in time, keep the main shaft surface clean, and reduce the impact of material accumulation on equipment operation; on the other hand, the staggered spirals will mix the materials again during the cleaning process, further improve the uniformity of the mixture, and ensure the stability of product quality.

[0034] Preferably, the first spiral axis and the second spiral axis may use the same rotation angular velocity based on the same spiral structure, so that the first spiral and the second spiral will not interfere with each other when they meet. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The preferred embodiments will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present invention.

[0036] Figure 1 It is a schematic diagram of the structure of the present invention;

[0037] Figure 2 It is a partial structural diagram of the present invention;

[0038] Figure 3 This is a schematic diagram showing the internal structure of the gear box of the present invention;

[0039] Figure 4 This is a schematic diagram showing the structure of the first rotating shaft in cross section according to the present invention;

[0040] Figure 5 It is a schematic cross-sectional view of part of the structure of the present invention.

[0041] In the figure: 1. body; 101. conical part; 2. first screw shaft; 201. first main shaft; 202. first screw; 3. second screw shaft; 301. second main shaft; 302. second screw; 4. first rotating shaft; 5. first support rod; 6. connecting disk; 601. first through hole; 7. second support rod; 8. first gear; 9. second gear; 10. third gear; 11. second rotating shaft; 12. fourth gear; 13. third rotating shaft; 14. gear box; 1401. second through hole. DETAILED DESCRIPTION

[0042] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific embodiments of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings and other embodiments can be obtained based on these drawings without inventive work.

[0043] To simplify the drawings, only portions relevant to the invention are schematically depicted in each figure; they do not represent the actual structure of the product. Furthermore, to simplify the drawings and facilitate understanding, in some figures, only one component with the same structure or function is schematically depicted or labeled. In this document, "one" not only means "only one" but also "more than one," and "several" includes "two" and "more than two."

[0044] It should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.

[0045] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0046] Reference Figures 1 to 5 A double-screw mixer with convenient feeding is proposed. The first screw shaft 2 has a first main shaft 201 and a first spiral 202, and revolves around the center line of the machine body 1 and rotates on its own; the second screw shaft 3 has a second main shaft 301 and a second spiral 302, and revolves around the center line of the machine body 1 and rotates on its own; the revolution speed of the second screw shaft 3 is greater than the revolution speed of the first screw shaft 2. After the second screw shaft 3 revolves, it approaches or moves away from the first screw shaft 2. After the second screw shaft 3 approaches the first screw shaft 2, the second spiral 302 approaches the first main shaft 201, and the first spiral 202 approaches the second main shaft 301, which are used to clean up agglomerated materials from each other.

[0047] In this embodiment, Figure 1 and Figure 2 As shown, the first screw shaft 2 uses the first spiral 202 to stir the material during its revolution and rotation around the centerline of the machine body 1. The revolution allows the first screw shaft 2 to move over a larger range, expanding the material mixing area; the rotation lifts the material along the spiral line, increasing mutual collision and mixing between the materials, effectively improving the uniformity of the mixing.

[0048] The second screw shaft 3 has a faster orbital speed. Preferably, the second screw shaft 3 has an orbital speed twice or more that of the first screw shaft 2. That is, when the first screw shaft 2 orbits once, the second screw shaft 3 orbits twice or more. This allows the first screw shaft 2 to meet the second screw shaft 3 during their orbital process. Preferably, the first screw 202 and the second screw shaft 302 have identical structural properties (e.g., pitch, blade thickness, etc.) in addition to their overall length. This allows for easier adjustment of the relative positions of the first and second screw shafts 2 and 3 before operation. When the first and second screw shafts 2 and 3 meet, the first and second screw shafts 202 and 302 intersect to avoid interference. When they meet during orbital process, they approach each other's main shafts. This allows for timely removal of agglomerated material from each other's main shafts, keeping the main shaft surfaces clean and reducing the impact of material accumulation on equipment operation. Furthermore, the interlaced screws remix the materials during the cleaning process, further improving the uniformity of the mixing and ensuring the stability of product quality.

[0049] Preferably, the first spiral shaft 2 and the second spiral shaft 3 can use the same angular velocity of rotation (that is, the speed of the first spiral shaft 2 driven by the motor is equal to the speed of the second spiral shaft 3 driven by the motor) on the basis of the same spiral structure, so that when they meet, the first spiral 202 and the second spiral 302 will not interfere with each other.

[0050] Furthermore, the first rotating shaft 4 is rotatably arranged relative to the body 1, and its axis is perpendicular to the horizontal plane; the first support rod 5 is arranged on the first rotating shaft 4, and the first spiral shaft 2 is rotatably arranged on the first support rod 5; the connecting disk 6 is arranged on the first rotating shaft 4, rotates synchronously with the first rotating shaft 4, and is arranged at intervals with the first support rod 5 in the height direction; the second support rod 7 is rotatably arranged relative to the connecting disk 6, and the second spiral shaft 3 is rotatably arranged on the second support rod 7, and the length of the second support rod 7 is less than the length of the first support rod 5.

[0051] In this embodiment, the first support rod 5 is mounted on the first rotating shaft 4 and is relatively long, enabling the first screw shaft 2 to orbit and rotate at a distance from the first rotating shaft 4, thereby expanding the range of action of the first screw shaft 2. When the first screw shaft 2 orbits around the centerline of the mixer body 1, the longer first support rod 5 allows the first screw shaft 2 to reach a wider area within the mixer, driving the material flow within a larger space, further increasing the material mixing paths and mixing opportunities.

[0052] The second support rod 7 is shorter than the first support rod 5. The shorter second support rod 7 results in a smaller orbital radius for the second screw shaft 3 than for the first screw shaft 2. This design allows the two screw shafts to form different stirring zones within the mixer. The second screw shaft 3 efficiently stirs the material near the center, complementing the wider stirring of the first screw shaft 2 to achieve a comprehensive mixing effect.

[0053] Furthermore, the first gear 8 is arranged on the body 1; the second gear 9 is engaged with the first gear 8 and rotates with the rotating shaft 4; the third gear 10 rotates synchronously with the second gear 9 and is coaxial with the second gear 9; one end of the second rotating shaft 11 is arranged on the second gear 9, and the other end is arranged on the third gear 10, so that the second gear 9 and the third gear 10 rotate synchronously; the fourth gear 12 is engaged with the third gear 10; one end of the third rotating shaft 13 is arranged on the fourth gear 12, and the other end is arranged on the second support rod 7.

[0054] In this embodiment, Figure 3 、 Figure 4 、 Figure 5 As shown, the first gear 8 is fixed on the body 1 and does not rotate by itself. It can mesh with the second gear 9 in a stable position. The first rotating shaft 4 passes through the axial hole of the first gear 8 and is fixedly connected to the first support rod 5. When the first rotating shaft 4 rotates, it drives the first support rod 5 and the connecting plate 6 to rotate. After the connecting plate 6 rotates, it drives the third rotating shaft 13 to rotate around the first rotating shaft 4. After the third rotating shaft 13 rotates, it synchronously drives the gear box 14 to rotate with the first rotating shaft 4 as the axis. After the gear box 14 rotates, it drives the second gear 9 and the third gear 10 to revolve around the first rotating shaft 4, among which the second gear 9 revolves around the first gear 8. Because the first gear 8 is fixed, the second gear 9 will rotate during the process of revolving around the first gear 8. After the second gear 9 rotates, the rotation is transmitted to the third gear 10 through the second rotating shaft 11. After the third gear 10 rotates, it synchronously drives the fourth gear 12 to rotate. After the fourth gear 12 rotates, it drives the third rotating shaft 13 to rotate. After the third rotating shaft 13 rotates, it synchronously drives the second support rod 7 to rotate around the third rotating shaft 13.

[0055] One end of the second rotating shaft 11 is attached to the second gear 9, and the other end is attached to the third gear 10, ensuring the synchronous rotation of the second gear 9 and the third gear 10. It is a key component for transmitting power between the two coaxial gears, ensuring the efficient and stable power transmission and providing guarantee for the normal operation of the entire gear transmission system.

[0056] One end of the third rotating shaft 13 is mounted on the fourth gear 12, and the other end is mounted on the second support rod 7, so that the fourth gear 12 rotates synchronously with the second support rod 7. Through the connection of the third rotating shaft 13, the rotational motion of the fourth gear 12 is accurately transmitted to the second support rod 7, further optimizing the mixing performance of the twin-screw mixer.

[0057] Furthermore, the number of teeth of the second gear 9 is smaller than that of the first gear 8 ; the number of teeth of the fourth gear 12 is smaller than or equal to that of the third gear 10 .

[0058] In this embodiment, the second gear 9 has fewer teeth than the first gear 8. According to the principles of gear transmission, this difference in tooth count causes the second gear 9 to rotate multiple times while orbiting the first gear 8, driving the third gear 10 to rotate synchronously via the second rotating shaft 11. Therefore, the third gear 10 and the second gear 9 rotate at the same speed. If the fourth gear 12 had fewer teeth than the third gear 10, this would further increase the speed of the fourth gear 12, driving the second support rod 7 and the second screw shaft 3 to generate additional, faster movement. If the two gears have the same number of teeth, constant speed transmission is maintained.

[0059] In summary, no matter the number of teeth of the fourth gear 12 is less than or equal to that of the third gear 10 , the second support rod 7 will obtain a faster revolution speed, thereby enhancing the stirring and mixing effect on the material.

[0060] Furthermore, the third rotating shaft 13 is parallel to the first rotating shaft 4 and is located on one side of the first rotating shaft 4 . The third rotating shaft 13 is located on a side of the first supporting rod 5 that is away from the first spiral shaft 2 in the horizontal direction.

[0061] In this embodiment, the third rotating shaft 13 is parallel to the first rotating shaft 4 and arranged eccentrically, located on the side of the first support rod 5 horizontally away from the first screw shaft 2. Due to the eccentricity of the third rotating shaft 13, the motion trajectory of the second screw shaft 3 is offset in the horizontal plane, no longer limited to simple coaxial or parallel relative motion with the first screw shaft 2. For example, during the mixing process, the second screw shaft 3 will regularly move closer to and farther from the motion plane of the first screw shaft 2 in the horizontal direction, further expanding its range of action within the mixer, agitating the materials over a wider area and enhancing the mixing effect.

[0062] The position of the third rotating shaft 13 enables the second spiral shaft 3 to expand the area of material being stirred and mixed. In a mixer, material distribution may be uneven. For example, when mixing materials with large particle sizes, large particles may gather at the edges, while small particles are in the center. The second spiral shaft 3, taking advantage of the eccentricity of the third rotating shaft 13, can better mix the large particles at the edges with the small particles in the center, thereby improving the overall mixing uniformity of the materials.

[0063] When the second spiral shaft 3 approaches the first spiral shaft 2 to clean the lumps, the eccentric position of the third rotating shaft 13 makes the relative angle and position of the second spiral shaft 3 and the first spiral shaft 2 more variable. It is no longer a simple parallel approach, but is staggered with the first spiral shaft 2 at different angles and positions. This means that when cleaning the agglomerated materials on the main shaft of the first spiral shaft 2, the second spiral 302 can scrape and clean the agglomerates from more directions and angles. Similarly, the first spiral shaft 2 can also more effectively clean the agglomerates on the main shaft of the second spiral shaft 3 at different angles, further ensuring the normal operation of the equipment and avoiding the influence of agglomeration accumulation on the mixing effect.

[0064] Due to the eccentric arrangement of the third rotating shaft 13, the second screw shaft 3 can stir the material in the mixer more comprehensively during its movement. After the mixing is completed, the material residue on the mixer wall and bottom can be reduced, thereby improving the utilization rate of the material and reducing production costs.

[0065] Furthermore, the connecting plate 6 has a first through hole 601 , and the third rotating shaft 13 passes through the first through hole 601 and is connected to the second supporting rod 7 .

[0066] In this embodiment, the first through hole 601 on the connecting disk 6 allows the third rotating shaft 13 to pass through and connect to the second support rod 7. This connection method ensures the stability of the power transmission from the fourth gear 12 to the second support rod 7. Because the third rotating shaft 13 directly passes through the first through hole 601 and connects to the second support rod 7, the power loss and deviation that may occur in the intermediate links are reduced. When the gear transmission drives the fourth gear 12 to rotate, the third rotating shaft 13 can transmit the rotational power to the second support rod 7, thereby stably driving the second screw shaft 3 to move. This avoids the problem of uneven material mixing or incomplete cleaning of lumps caused by unstable power transmission.

[0067] More importantly, through Figure 1 , Figure 2 and Figure 4 It can be seen that, because the connecting disk 6 has the first through hole 601, when the third rotating shaft 13 is located on one side of the first supporting rod 5, the first spiral shaft 2 and the second spiral shaft 3 are close to each other (i.e., they meet during the revolution, are at the shortest distance, and clear each other), and the first through hole 601 is eccentrically arranged relative to the axis of the connecting disk 6. The purpose of such arrangement is to enable the second spiral shaft 3 to always maintain the same position when it meets the first spiral shaft 2 during a faster revolution. Figures 1-4 In the state shown, the second spiral shaft 3 needs to be allowed to revolve around the third rotation axis 13 while also rotating around the first rotation axis 4.

[0068] Furthermore, the gear box 14 has a second through hole 1401 , and the third rotating shaft 13 is connected to the second support rod 7 through the first through hole 601 and the second through hole 1401 .

[0069] In this embodiment, the gear box 14 has a second through hole 1401, and the third rotating shaft 13 is connected to the second support rod 7 through the first through hole 601 and the second through hole 1401. These two through holes provide positioning for the third rotating shaft 13, ensuring that it can maintain an accurate position and angle when connected to the second support rod 7, reducing the movement instability caused by installation deviation. At the same time, this connection method enhances the connection stability between the third rotating shaft 13 and the gear box 14 and the second support rod 7. During the operation of the mixer, even if it is subjected to external forces such as vibrations generated by material stirring, the third rotating shaft 13 can rely on the constraints of the two through holes to continuously and stably transfer power from the fourth gear 12 to the second support rod 7, thereby ensuring the stability and reliability of the movement of the second spiral shaft 3, and thus ensuring the overall performance of the mixer. The third rotating shaft 13 can also react to the gear box 14 through the second through hole 1401, thereby driving the rotation of the gear box 14. Through the rotation of the third rotating shaft 13 around the first rotating shaft 4, the rotation angular velocity of the gear box 14 is kept the same as the rotation angular velocity of the first rotating shaft 4, which also provides conditions for the engagement between the second gear 9, the third gear 10 and the fourth gear 12.

[0070] Furthermore, the body 1 has a tapered portion 101 ; the first screw shaft 2 is arranged tilted; and the tilt angle of the first screw shaft 2 is equal to the taper of the tapered portion 101 .

[0071] In this embodiment, the machine body 1 has a tapered portion 101, and the inclination angle of the first screw shaft 2 is equal to the taper of the tapered portion 101. This design helps guide the flow of materials within the mixer. When the first screw shaft 2 rotates, its inclination angle matches the taper of the tapered portion 101, allowing the materials to move in an orderly manner along the helical line of the first screw shaft 2 and the conical surface of the tapered portion 101. For example, during the mixing process, the materials can move smoothly from the bottom to the top of the tapered portion 101 or vice versa, driven by gravity and the screw shaft, preventing the materials from accumulating at a certain location in the tapered portion 101 and ensuring that the materials are fully stirred and mixed throughout the mixing space.

[0072] When stirring materials, the first screw shaft 2 maximizes the use of the space within the conical portion 101. Because its inclination angle matches the taper of the conical portion 101, the first screw shaft 2 can lift or push materials from different radial positions within the conical portion 101 during rotation. For example, when mixing materials of varying particle sizes and densities, large particles may be at the bottom of the conical portion 101, while small particles are near the top. By aligning its inclination angle with the taper, the first screw shaft 2 can lift the large particles from the bottom to the top for thorough mixing with the small particles, and vice versa, thereby improving mixing uniformity and efficiency.

[0073] The inclination angle of the first screw shaft 2 matches the taper of the conical section 101, helping to reduce material residue on the wall surface of the conical section 101. After mixing is completed, the screw shaft's movement matches the shape of the conical section 101, effectively scraping as much material as possible off the wall surface of the conical section 101 and drawing it into the mixing cycle. Compared to a situation where the inclination angle and taper do not match, this design effectively reduces material residue, improves material utilization, reduces waste, and also facilitates cleaning and subsequent use of the mixer.

[0074] From a mechanical perspective, the inclination angle of the first screw shaft 2 matches the taper of the tapered portion 101, ensuring a more even distribution of the material forces acting on the screw shaft during operation. When material contacts the screw shaft and tapered portion 101, the matching angles between the two effectively disperse and balance the material's reaction forces on the screw shaft. This helps reduce vibration and wear caused by uneven force on the screw shaft, improves the structural stability and service life of the first screw shaft 2, and ultimately ensures the overall operational stability of the twin-screw mixer.

[0075] In addition, by adjusting the distance between the first spiral shaft 2 and the conical portion 101 , the first spiral shaft 2 can also clean the inner wall of the conical portion 101 during the stirring process to prevent the material from adhering to the inner wall.

[0076] Furthermore, the inclination angle of the second spiral shaft 3 is greater than the taper of the conical portion 101. From the upper part of the body 1 to the lower part of the body 1, the distance from the second spiral 302 to the first main shaft 201 gradually decreases, and the distance from the first spiral 202 to the second main shaft 301 gradually decreases.

[0077] In this embodiment, the inclination angle of the second screw shaft 3 is greater than the taper of the conical portion 101. This allows the second screw shaft 3 to agitate the material more vigorously during rotation. Compared to the more gentle material propulsion of the first screw shaft 2, the larger inclination angle of the second screw shaft 3 can produce a greater vertical displacement of the material. For example, when mixing highly viscous materials, the second screw shaft 3 can leverage its steep inclination angle to more effectively lift the material from the bottom to a higher position. The material then falls rapidly under the action of gravity, forming a more powerful convection, thereby breaking the viscous connection between the materials and improving the mixing effect.

[0078] From the top to the bottom of the body 1, the distance from the second spiral 302 to the first main shaft 201 gradually decreases, and the distance from the first spiral 202 to the second main shaft 301 gradually decreases. This allows the two spiral shafts to better cooperate with each other at different heights. At the top of the mixer, the distance between the two spiral shafts is relatively large, and the material has enough space to be stirred and dispersed between the two. As the material moves toward the bottom of the mixer, the two spiral shafts gradually approach each other, and they can mix and comb the material more finely. For example, when mixing materials of different shapes, the spiral shafts that gradually approach each other at the bottom of the mixer can further squeeze and knead the materials, so that the differences in the shapes of the materials are better integrated, thereby improving the uniformity of the mixing.

[0079] Because the second spiral shaft 3 has a large inclination angle and gradually approaches the first main shaft 201 during its downward movement, it can provide greater force when cleaning the agglomerated material on the first main shaft 201. The second spiral 302 can scrape the agglomerates on the first main shaft 201 at a steeper angle, which can more effectively scrape off the agglomerated material compared to the case with a smaller angle. At the same time, when the first spiral 202 approaches the second main shaft 301, it can also better clean the agglomerates on the second main shaft 301. This design of close proximity and different angles greatly enhances the ability to clean agglomerated material on each other's main shafts, ensuring that the equipment always maintains a good operating state and avoiding the impact of agglomerations on the mixing effect.

[0080] The first screw shaft 2 provides a relatively smooth and stable axial conveyance of the material, allowing for basic flow and initial mixing in one direction. The second screw shaft 3, with its larger angle, creates more intense radial and tangential motion during the conveying process, causing the material to intersect, collide, and blend at different locations and directions. Together, these two elements agitate and mix the material in multiple dimensions, significantly improving the uniformity and thoroughness of the mix.

[0081] It should be noted that, preferably, a motor with its own battery, such as a lithium battery-driven motor, can be used as the driving source for the first spiral shaft 2 and the second spiral shaft 3 , which is powered by its own battery without the need for external wires.

[0082] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A double-screw mixer with convenient feeding, characterized in that: include: Body (1); A first spiral shaft (2), the first spiral shaft (2) having a first main shaft (201) and a first spiral (202), and revolving around the center line of the body (1) and rotating on its own axis; A second spiral shaft (3), the second spiral shaft (3) having a second main axis (301) and a second spiral (302), and revolving around the center line of the body (1) and rotating on its own axis; The revolution angular velocity of the second spiral shaft (3) is greater than the revolution angular velocity of the first spiral shaft (2). After the second spiral shaft (3) revolves, it approaches or moves away from the first spiral shaft (2). When the second spiral shaft (3) approaches the first spiral shaft (2), the second spiral (302) approaches the first main shaft (201), and the first spiral (202) approaches the second main shaft (301), so as to clean up agglomerated materials from each other. a first rotating shaft (4), the first rotating shaft (4) being rotatably arranged relative to the machine body (1); and a third rotating shaft (13) being parallel to the first rotating shaft (4) and being located on one side of the first rotating shaft (4); a first support rod (5), the first support rod (5) being arranged on the first rotating shaft (4), the first spiral shaft (2) being rotatably arranged on the first support rod (5), and the third rotating shaft (13) being located on a side of the first support rod (5) that is away from the first spiral shaft (2) in a horizontal direction; a connecting disk (6), the connecting disk (6) being arranged on the first rotating shaft (4) and spaced apart from the first supporting rod (5) in a height direction; A second support rod (7), the second support rod (7) is rotatably arranged relative to the connecting disk (6), the second spiral shaft (3) is rotatably arranged on the second support rod (7), and the length of the second support rod (7) is less than the length of the first support rod (5).

2. A double-screw mixer with convenient feeding according to claim 1, characterized in that: The first spiral shaft (2) and the second spiral shaft (3) have the same rotational angular velocity.

3. A double-screw mixer with convenient feeding according to claim 2, characterized in that: Also includes: a first gear (8), the first gear (8) being arranged on the machine body (1); a second gear (9), the second gear (9) being meshed with the first gear (8) and rotating along with the rotating shaft (4); a third gear (10), the third gear (10) rotating synchronously with the second gear (9) and being coaxial with the second gear (9); a second rotating shaft (11), one end of the second rotating shaft (11) being arranged on the second gear (9) and the other end being arranged on the third gear (10), so that the second gear (9) and the third gear (10) rotate synchronously; a fourth gear (12), the fourth gear (12) being meshed with the third gear (10); One end of the third rotating shaft (13) is arranged on the fourth gear (12).

4. A double-screw mixer with convenient feeding according to claim 3, characterized in that: The number of teeth of the second gear (9) is smaller than the number of teeth of the first gear (8); The number of teeth of the fourth gear (12) is less than or equal to the number of teeth of the third gear (10).

5. A double-screw mixer with convenient feeding according to claim 3, characterized in that: The connecting disk (6) has a first through hole (601), and the third rotating shaft (13) passes through the first through hole (601) and is connected to the second supporting rod (7).

6. A double-screw mixer with convenient feeding according to claim 5, characterized in that: Also includes: A gear box (14) is rotatably arranged on the machine body (1); the first gear (8), the second gear (9), the third gear (10), the fourth gear (12) and the second rotating shaft (11) are all located in the gear box (14); after the gear box (14) rotates, the second gear (9), the third gear (10), the fourth gear (12) and the second rotating shaft (11) follow the movement.

7. A double-screw mixer with convenient feeding according to claim 6, characterized in that: The gear box (14) has a second through hole (1401), and the third rotating shaft (13) passes through the first through hole (601) and the second through hole (1401) to be connected to the second support rod (7).

8. The double-screw mixer with convenient feeding according to claim 1, characterized in that: The machine body (1) has a tapered portion (101); the first spiral shaft (2) is arranged tilted; the tilt angle of the first spiral shaft (2) is equal to the taper of the tapered portion (101).

9. A double-screw mixer with convenient feeding according to claim 8, characterized in that: The inclination angle of the second spiral shaft (3) is greater than the taper of the conical portion (101), and the distance from the second spiral (302) to the first main shaft (201) gradually decreases from the upper part of the body (1) to the lower part of the body (1), and the distance from the first spiral (202) to the second main shaft (301) gradually decreases.

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