Double-helix mixer convenient to feed

Abstract

The invention relates to the technical field of mixers, and provides a double-screw mixer convenient for feeding, a first screw shaft is provided with a first main shaft and a first screw and revolves and rotates around the center line of a mixer body, and a second screw shaft is provided with a second main shaft and a second screw and revolves and rotates around the center line of the mixer body; the revolution speed of the second screw shaft is higher than that of the first screw shaft, the second screw shaft is close to or far away from the first screw shaft after revolution, the second screw and the first screw are staggered after the second screw shaft is close to the first screw shaft, the second screw is close to the first main shaft, and the first screw is close to the second main shaft for cleaning caked materials. By means of the technical scheme, the problems that a traditional double-spiral mixer is prone to shaft sticking and difficult to clean, and production continuity and stability are reduced are solved.

Description

Technical Field

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

[0002] In the actual application scenarios of traditional twin-screw mixers, the shaft sticking problem has always been a stubborn problem that plagues production efficiency and product quality. When the machine is working, the material is easily attached and accumulated on the screw shaft due to various factors during the mixing process. For example, when dealing with sticky materials, such as sauce ingredients in some food processing, or high-viscosity colloids in the chemical industry, the material will adhere tightly to the shaft surface, and over time, a thick accumulation layer will gradually form, eventually leading to the shaft sticking phenomenon.

[0003] Since the accumulated materials are tightly attached and may even harden, ordinary cleaning tools are difficult to remove effectively. Manual cleaning not only consumes a lot of manpower and time, and is inefficient, but may also damage the surface of the spiral shaft due to improper operation by the cleaning personnel, affecting the service life and accuracy of the equipment. The use of mechanically assisted cleaning, such as small scrapers and other tools, will also face the problem of incomplete cleaning and difficulty in reaching complex dead corners. In addition, during the cleaning process, the machine needs to be shut down, which leads to interruption of the production line, increases production costs, reduces the continuity and stability of production, and has many adverse effects on the company's economic benefits and production plans. Summary of the invention The invention provides a double-screw mixer with convenient feeding, which solves the problems that the traditional double-screw mixer is easy to stick to the shaft and difficult to clean, thereby reducing the production continuity and stability.

[0004] The technical solution of the present invention is as follows: A double-screw mixer for convenient feeding, comprising: Body; A first spiral shaft, the first spiral shaft has a first main axis and a first spiral, and revolves around the center line of the body and rotates on its own axis; A second spiral shaft, the second spiral shaft has a second main axis and a second spiral, and revolves around the center line of the body and rotates on its own axis; 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 approaches the first main shaft, and the first spiral approaches the second main shaft, so as to clean up the agglomerated materials from each other.

[0005] Optionally, the first helical shaft and the second helical shaft have the same rotation angular velocity; further comprising: A first rotating shaft, the first rotating shaft is rotatably arranged relative to the machine body, and its axis is perpendicular to the horizontal plane; A first support rod, wherein the first support rod is disposed on the first rotating shaft, and the first spiral shaft is rotatably disposed on the first support rod; A connecting disk, which is disposed on the first rotating shaft, rotates synchronously with the first rotating shaft, and is spaced apart from the first supporting rod in a height direction; a second support rod, the second support rod being rotatably arranged relative to the connecting disk, the second spiral shaft being rotatably arranged on the second support rod, and the length of the second support rod being smaller than the length of the first support rod; Optionally, the second support rod is rotatably arranged relative to the connecting disk; further comprising: a first gear, the first gear being arranged on the body; a second gear, the second gear being rotatably disposed on the body and meshing with the first gear; a third gear, the third gear being rotatably disposed on the machine body and being coaxial with the second gear; a second rotating shaft, one end of the second rotating shaft being arranged on the second gear and the other end being arranged on the third gear, so that the second gear and the third gear rotate synchronously; a fourth gear, the fourth gear being disposed on the second support rod and meshing with the third gear; 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 supporting rod, so that the fourth gear rotates synchronously with the second supporting rod.

[0006] Optionally, the number of teeth of the second gear is smaller than the number of teeth of the first gear; The number of teeth of the fourth gear is less than or equal to the number of teeth of the third gear.

[0007] 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, and the third rotating shaft is located on a side of the first support rod far away from the first spiral shaft in the horizontal direction.

[0008] Optionally, the connecting disk has a first through hole, and the third rotating shaft passes through the first through hole to be connected to the second supporting rod.

[0009] Optionally, it also includes: 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.

[0010] Optionally, the gear box has a second through hole, and the third rotating shaft is connected to the second supporting rod through the first through hole and the second through hole.

[0011] 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.

[0012] 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.

[0013] The working principle and beneficial effects of the present invention are: In the present invention, the first spiral shaft is used to stir the material during the process of revolution and rotation around the center line of the machine body. Revolution enables the first spiral shaft to move in a larger range, expanding the mixing area of ​​the material; rotation lifts the material along the spiral line direction to increase the mutual collision and mixing between the materials, effectively improving the uniformity of the mixing.

[0014] The second spiral shaft has a faster revolution speed. Preferably, the revolution speed of the second spiral shaft is twice 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 structurally identical, 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, the agglomerated materials on the main shaft can be cleaned in time, the main shaft surface can be kept clean, and the influence of material accumulation on the operation of the equipment can be reduced; on the other hand, the staggered spirals will mix the materials again during the cleaning process, further improving the uniformity of the mixture and ensuring the stability of product quality.

[0015] Preferably, the first spiral axis and the second spiral axis can 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

[0016] The preferred implementation modes 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.

[0017] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2It is a partial structural schematic diagram of the present invention; Figure 3 This is a schematic diagram showing the structure of the gear box inside the present invention; Figure 4 The schematic diagram of the structure of the first rotating shaft is shown in cross section in the present invention; Figure 5 It is a schematic cross-sectional view of a partial structure of the present invention.

[0018] In the figure: 1, body; 101, tapered 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 plate; 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

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0020] In order to simplify the drawings, only the parts related to the invention are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0021] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] 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.

[0023] Reference Figure 1~Figure 5A double-screw mixer with convenient feeding is proposed. The first screw shaft 2 has a first main shaft 201 and a first screw 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 screw 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 screw 302 approaches the first main shaft 201, and the first screw 202 approaches the second main shaft 301, which are used to clean up the agglomerated materials from each other.

[0024] In this embodiment, Figure 1 and Figure 2 As shown, the first screw shaft 2 uses the first screw 202 to stir the material during the process of revolution and rotation around the center line of the machine body 1. Revolution enables the first screw shaft 2 to move in a larger range, expanding the mixing area of ​​the material; rotation lifts the material along the spiral line direction to increase the mutual collision and mixing between the materials, effectively improving the uniformity of the mixing.

[0025] The revolution speed of the second spiral shaft 3 is faster. Preferably, the revolution speed of the second spiral shaft 3 is twice or more than that of the first spiral shaft 2, that is, when the first spiral shaft 2 orbits once, the second spiral shaft 3 orbits twice or more. In this way, the first spiral shaft 2 can meet the second spiral shaft 3 during the revolution. Preferably, the first spiral 202 and the second spiral 302 have the same structural properties (such as pitch, blade thickness, etc.) except for the total length, so that the relative position of the first spiral shaft 2 and the second spiral shaft 3 can be adjusted more conveniently before work, so that when the first spiral shaft 2 and the second spiral shaft 3 meet, the first spiral 202 and the second spiral 302 can be staggered to avoid interference, and when they meet during the revolution, they will approach each other's main shaft respectively. On the one hand, the agglomerated materials on each other's main shaft can be cleaned in time, the main shaft surface can be kept clean, and the influence of material accumulation on the operation of the equipment can be reduced; on the other hand, the staggered spirals will mix the materials again during the cleaning process, further improving the uniformity of the mixing and ensuring the stability of product quality.

[0026] Preferably, the first spiral shaft 2 and the second spiral shaft 3 can use the same angular rotation speed (that is, the rotation speed of the first spiral shaft 2 driven by the motor is equal to the rotation speed of the second spiral shaft 3 driven by the motor) based on the same spiral structure, so that when they meet, the first spiral 202 and the second spiral 302 will not interfere with each other.

[0027] 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.

[0028] In this embodiment, the first support rod 5 is arranged on the first rotating shaft 4, and its length is relatively long, so that the first screw shaft 2 can revolve and rotate at a position far away from the first rotating shaft 4, thereby expanding the range of action of the first screw shaft 2. When the first screw shaft 2 revolves around the center line of the body 1, the longer first support rod 5 allows the first screw shaft 2 to reach a wider area in the mixer, driving the material to flow in a larger space, and further increasing the mixing path and mixing opportunities of the material.

[0029] The second support rod 7 is shorter than the first support rod 5. The shorter second support rod 7 makes the revolution radius of the second screw shaft 3 smaller than that of the first screw shaft 2. This design enables the two screw shafts to form different levels of stirring areas in the mixer. The second screw shaft 3 can efficiently stir the materials near the center, and cooperate with the stirring of the first screw shaft 2 in a wider area to form a full range of material mixing effects.

[0030] Furthermore, the first gear 8 is arranged on the body 1; the second gear 9 is meshed 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 meshed 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.

[0031] In this embodiment, Figure 3 , Figure 4 , Figure 5As 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, wherein 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.

[0032] 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, which ensures the synchronous rotation of the second gear 9 and the third gear 10. It is a key component for realizing the transmission of power between two coaxial gears, ensuring the high efficiency and stability of power transmission, and providing guarantee for the normal operation of the entire gear transmission system.

[0033] One end of the third rotating shaft 13 is arranged on the fourth gear 12, and the other end is arranged on the second supporting rod 7, so that the fourth gear 12 rotates synchronously with the second supporting 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 supporting rod 7, further optimizing the mixing performance of the double-screw mixer.

[0034] 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 .

[0035] In this embodiment, the number of teeth of the second gear 9 is smaller than that of the first gear 8. According to the principle of gear transmission, this difference in the number of teeth will cause the second gear 9 to rotate multiple times while orbiting the first gear 8, and drive the third gear 10 to rotate synchronously through the second rotating shaft 11. Therefore, the third gear 10 and the second gear 9 have the same rotation speed. If the number of teeth of the fourth gear 12 is smaller than that of the third gear 10, the rotation speed of the fourth gear 12 will be further increased, driving the second support rod 7 and the second screw shaft 3 to produce faster additional movement; if the number of teeth of the two is equal, the constant speed transmission is maintained.

[0036] 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.

[0037] 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 far away from the first spiral shaft 2 in the horizontal direction.

[0038] In this embodiment, the third rotating shaft 13 is parallel to the first rotating shaft 4 and is arranged eccentrically, and is located on the side of the first support rod 5 that is far away from the first spiral shaft 2 in the horizontal direction. Due to the eccentricity of the third rotating shaft 13, the movement trajectory of the second spiral shaft 3 will be offset in the horizontal plane, and is no longer limited to simple coaxial or parallel relative movement with the first spiral shaft 2. For example, during the mixing process, the second spiral shaft 3 will regularly approach and move away from the movement plane of the first spiral shaft 2 in the horizontal direction, further expanding its range of action in the mixer, so that the material can be stirred in a wider space, and the mixing effect is enhanced.

[0039] The position of the third rotating shaft 13 enables the second spiral shaft 3 to expand the area of ​​the material being stirred and mixed. In a mixer, the material distribution may be uneven. For example, when mixing materials with large differences in particle size, large particles may gather at the edge and small particles in the center. The second spiral shaft 3, with the eccentricity advantage of the third rotating shaft 13, can better mix the large particles at the edge with the small particles in the center, thereby improving the mixing uniformity of the overall material.

[0040] When the second screw shaft 3 approaches the first screw shaft 2 to clean the lumps, the eccentric position of the third rotating shaft 13 makes the relative angle and position of the second screw shaft 3 and the first screw shaft 2 more variable. It is no longer a simple parallel approach, but is staggered with the first screw shaft 2 at different angles and positions. This means that when cleaning the agglomerated materials on the main shaft of the first screw shaft 2, the second screw 302 can scrape and clean the lumps from more directions and angles. Similarly, the first screw shaft 2 can also more effectively clean the lumps on the main shaft of the second screw shaft 3 at different angles, further ensuring the normal operation of the equipment and avoiding the influence of agglomeration accumulation on the mixing effect.

[0041] Due to the eccentric arrangement of the third rotating shaft 13, the second screw shaft 3 can stir the materials in the mixer more comprehensively during the movement. After the mixing is completed, the residual materials on the wall and bottom of the mixer can be reduced, the utilization rate of the materials can be improved, and the production cost can be reduced.

[0042] Furthermore, the connecting plate 6 has a first through hole 601 , and the third rotating shaft 13 passes through the first through hole 601 to be connected with the second supporting rod 7 .

[0043] In this embodiment, the first through hole 601 on the connecting disk 6 allows the third rotating shaft 13 to pass through and connect with 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. Since the third rotating shaft 13 directly passes through the first through hole 601 and is connected to the second support rod 7, the power loss and deviation that may be generated in the intermediate link 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, and then stably drive the second screw shaft 3 to move. The problem of uneven material mixing or incomplete cleaning of lumps caused by unstable power transmission is avoided.

[0044] 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 closest to each other, and clear each other), and the first through hole 601 is arranged eccentrically 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 as the first spiral shaft 2 when it meets the first spiral shaft 2 during a faster revolution. Figure 1-Figure 4 In the state shown, the second spiral shaft 3 needs to be allowed to revolve around the third rotating shaft 13 while rotating around the first rotating shaft 4 at the same time.

[0045] Furthermore, the gear box 14 has a second through hole 1401 , and the third rotating shaft 13 is connected to the second supporting rod 7 through the first through hole 601 and the second through hole 1401 .

[0046] 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. The 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 unstable movement 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 vibration 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 meshing between the second gear 9, the third gear 10 and the fourth gear 12.

[0047] Furthermore, the body 1 has a tapered portion 101 ; the first spiral shaft 2 is arranged tilted; and the tilt angle of the first spiral shaft 2 is equal to the taper of the tapered portion 101 .

[0048] In this embodiment, the body 1 has a conical portion 101, and the inclination angle of the first screw shaft 2 is equal to the taper of the conical portion 101. This design helps to guide the flow of materials in the mixer. When the first screw shaft 2 rotates, its inclination angle matches the taper of the conical portion 101, so that the material can move in an orderly manner along the spiral line of the first screw shaft 2 and the conical surface of the conical portion 101. For example, during the mixing process, the material can move smoothly from the bottom to the top or from the top to the bottom of the conical portion 101 under the push of gravity and the screw shaft, avoiding the accumulation of materials at a certain position of the conical portion 101, ensuring that the materials can be fully stirred and mixed in the entire mixing space.

[0049] When stirring the material, the first screw shaft 2 can make the most of the space of the conical part 101. Since the inclination angle is consistent with the taper of the conical part 101, the first screw shaft 2 can lift or push the material from different radial positions of the conical part 101 during the rotation. For example, when mixing materials of different particle sizes and densities, large particles may be at the bottom of the conical part 101, and small particles are near the top. The first screw shaft 2 can lift the large particles at the bottom to the top and fully mix them with the small particles according to the coordination of its inclination angle and taper, and vice versa, thereby improving the uniformity and efficiency of mixing.

[0050] The inclination angle of the first screw shaft 2 is equal to the taper of the conical part 101, which helps to reduce the material residue on the wall of the conical part 101. After the mixing is completed, since the movement of the screw shaft matches the shape of the conical part 101, the material on the wall of the conical part 101 can be scraped off as much as possible and rolled into the mixing cycle. Compared with the case where the inclination angle and the taper do not match, this design can effectively reduce the amount of material residue, improve the utilization rate of materials, reduce waste, and also facilitate the cleaning of the mixer and the next use.

[0051] From a mechanical point of view, the inclination angle of the first screw shaft 2 is the same as the taper of the conical part 101, so that the material force on the screw shaft during operation is more evenly distributed. When the material contacts the screw shaft and the conical part 101, the reaction force of the material on the screw shaft can be better dispersed and balanced due to the matching angles of the two. This helps to reduce the vibration and wear of the screw shaft caused by uneven force, improve the structural stability and service life of the first screw shaft 2, and thus ensure the overall operating stability of the double-screw mixer.

[0052] In addition, by adjusting the distance between the first screw shaft 2 and the conical portion 101 , the first screw 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.

[0053] Furthermore, the inclination angle of the second spiral axis 3 is greater than the taper of the conical portion 101 , and 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 axis 201 gradually decreases, and the distance from the first spiral 202 to the second main axis 301 gradually decreases.

[0054] In this embodiment, the inclination angle of the second screw shaft 3 is greater than the taper of the conical portion 101, which makes the second screw shaft 3 stir the material more violently during the rotation. Compared with the relatively gentle way of pushing the material by the first screw shaft 2, the larger inclination angle of the second screw shaft 3 can cause the material to produce a larger displacement change in the vertical direction. For example, when mixing some materials with high viscosity, the second screw shaft 3 can use its steep inclination angle to more effectively lift the material from the bottom to a higher position, and then the material falls quickly under the action of gravity, forming a stronger convection, thereby breaking the viscous connection between the materials and improving the mixing effect.

[0055] From the upper part to the lower part of the machine 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. In the upper part 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 to the lower part 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 lower part of the mixer can further squeeze and knead the materials, so that the shape differences of the materials are better integrated and the uniformity of mixing is improved.

[0056] Since the second spiral shaft 3 has a large inclination angle and gradually approaches the first main shaft 201 during the downward movement, it can provide a greater force when cleaning the agglomerated materials on the first main shaft 201. The second spiral 302 can scrape the agglomerates on the first main shaft 201 at a steeper angle, and can more effectively scrape off the agglomerated materials compared to the case of 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 being close to each other and having a different angle greatly enhances the ability to clean the agglomerated materials on each other's main shafts, ensuring that the equipment always maintains a good operating state and avoids the mixing effect being affected by agglomerations.

[0057] The first screw shaft 2 can make the material produce a relatively gentle and stable axial conveyance, allowing the material to have basic flow and preliminary mixing in one direction. The second screw shaft 3 with a large angle will make the material produce stronger radial and tangential motion during the conveying process, so that the material intersects, collides and blends with each other in different positions and directions. The combination of the two can stir and mix the material from multiple dimensions, greatly improving the uniformity and sufficiency of the mixing.

[0058] It should be noted that, preferably, a motor with its own battery, such as a motor driven by a lithium battery, can be selected. The motor is powered by its own battery and does not require external wires, as a driving source for the first spiral shaft 2 and the second spiral shaft 3.

[0059] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. 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 for 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 angular velocity of revolution of the second screw shaft (3) is greater than the angular velocity of revolution of the first screw shaft (2). After the second screw shaft (3) orbits, 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 screw (302) approaches the first main shaft (201), and the first screw (202) approaches the second main shaft (301), so as to clean up agglomerated materials from each other.

2. A double-screw mixer for 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, and further include: A first rotating shaft (4), the first rotating shaft (4) being rotatably arranged relative to the machine body (1); A first support rod (5), wherein 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); 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).

3. A double-screw mixer for 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 of the second rotating shaft (11) 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); A third rotating shaft (13), one end of the third rotating shaft (13) is arranged on the fourth gear (12), and the other end is arranged on the second supporting rod (7).

4. A double-screw mixer for 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 for convenient feeding according to claim 3, characterized in that: 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 far away from the first spiral shaft (2) in the horizontal direction.

6. A double-screw mixer for convenient feeding according to claim 5, characterized in that: 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).

7. A double-screw mixer for convenient feeding according to claim 6, characterized in that: Also includes: A gear box (14), wherein the gear box (14) is rotatably arranged on the machine body (1), and 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.

8. A double-screw mixer for convenient feeding according to claim 7, 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 supporting rod (7).

9. A double-screw mixer for 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).

10. A double-screw mixer for convenient feeding according to claim 9, characterized in that: The inclination angle of the second spiral axis (3) is greater than the taper of the tapered portion (101), and the distance from the second spiral (302) to the first main axis (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 axis (301) gradually decreases.

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