Novel high-distribution meshing type rotor of internal mixer

Abstract

The invention discloses a novel high-distribution meshing type rotor of an internal mixer, and particularly relates to the technical field of internal mixers.The novel high-distribution meshing type rotor comprises a rotor body, a long edge, a first short edge and a second short edge, the phase of the first short edge relative to the long edge is 180 degrees, and the phase of the second short edge relative to the long edge is 270 degrees; the cross section of each of the long edge, the first short edge and the second short edge comprises an edge top surface, an edge glue facing surface and an edge back glue surface, the width of the edge top surface is 0.08 of the outer diameter of the rotor body, and the slope included angle of the edge glue facing surface is 68 degrees. Through spiral distribution of the long edges, the first short edges and the second short edges and specific phase difference design, materials can flow along a complex path among the rotors, a multi-directional shear field is formed, material agglomeration is effectively broken, the materials can be more uniformly mixed in the internal mixing process, the mixing effect is remarkably improved, and the mixing efficiency is improved. And the product quality problem caused by non-uniform mixing is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of internal mixers, and in particular to a novel high-distribution meshing rotor for an internal mixer. Background Art

[0002] Internal mixers are widely used in the rubber products industry. Their primary function is to mix materials, rapidly blending fillers and rubber into a single, integrated whole. This requires good dispersion and uniformity of the filler within the rubber. The rotor is the core component of the internal mixer. During operation, the two rotors rotate in opposite directions, and their overall structure determines the dispersion and distribution of the filler.

[0003] Currently, traditional internal mixer rotor designs are primarily categorized into shearing and intermeshing types, each with its own advantages and disadvantages. While shearing rotors provide a strong shearing effect, facilitating compound crushing and dispersion, they can easily lead to excessively rapid temperature rise during mixing, impacting compound processing properties. Intermeshing rotors, while experiencing a slower temperature rise and providing better compound dispersion, offer a weaker shearing effect, limiting their ability to absorb lumps and flakes. Summary of the Invention

[0004] The purpose of the present invention is to provide a novel high-distribution meshing rotor for an internal mixer to solve the problems raised in the above background technology.

[0005] In order to achieve the above object, the present invention provides the following technical solution: a new type of high-distribution meshing rotor for an internal mixer, comprising: A rotor body, a long ridge, a first short ridge, and a second short ridge, wherein the long ridge, the first short ridge, and the second short ridge are all spirally protruded on the outer circumference of the rotor body, the first short ridge is 180 degrees in phase with the long ridge, and the second short ridge is 270 degrees in phase with the long ridge; The cross-sections of the long edge, the first short edge and the second short edge all include an edge top surface, an edge facing rubber surface and an edge back rubber surface. The width of the edge top surface is 0.08 of the outer diameter of the rotor body, the slope angle of the edge facing rubber surface is 68°, and the slope angle of the edge back rubber surface is 74°.

[0006] Furthermore, the length of the long edge is 0.75 to 0.85 times the axial length of the rotor body, and the helix angle of the long edge is 30° to 40°, so that the long edge can provide stable shear force over most of the axial length of the rotor. At the same time, a reasonable range of the helix angle can ensure smooth flow of material on the long edge, avoiding material accumulation or excessive shearing.

[0007] Furthermore, the length of the first short edge is 0.2 to 0.3 of the axial length of the rotor body, and the helix angle of the first short edge is 30° to 40°, so that the first short edge can generate a strong shear force in a local area, further enhancing the mixing and dispersion effect of the material.

[0008] Furthermore, the length of the second short edge is 0.3 to 0.4 of the axial length of the rotor body, and the helix angle of the second short edge is 25° to 35°, which can produce different shearing effects in another local area of ​​the rotor.

[0009] Furthermore, the intersection area of ​​the cross-section of the long edge, the first short edge and the second short edge with the cross-section of the rotor body accounts for 0.2 of the cross-sectional area of ​​the edge.

[0010] Furthermore, the surfaces of the rotor body, the long ridges, the first short ridges and the second short ridges are all provided with a wear-resistant coating, thereby improving the wear resistance and service life of the rotor.

[0011] Furthermore, the cross-sectional shapes of the long edge, the first short edge and the second short edge are asymmetrically designed, thereby optimizing the flow path of the rubber material and improving mixing efficiency.

[0012] In the above technical solution, the technical effects and advantages provided by the present invention are: 1. Through the spiral distribution of the long edge, the first short edge and the second short edge and the specific phase difference design, the material can flow along a complex path between the rotors, forming a multi-directional shear field, effectively breaking up the material agglomeration, so that the material can be mixed more evenly during the mixing process, significantly improving the mixing effect and reducing product quality problems caused by uneven mixing; 2. The slope of the ridge facing rubber surface and the ridge back rubber surface is larger than that of traditional rotors, forming a wedge-shaped feed port, which enhances the ability to grab large chunks and flakes of rubber. The width of the ridge top surface is wider than that of traditional shearing rotors, which has a better cooling effect on the rubber when it interacts with the inner wall of the mixing chamber, and the temperature rise is slow; 3. The length, spiral angle and intersection area of ​​the long edge, the first short edge and the second short edge are optimized to further optimize the flow path and shearing effect of the material between the rotors. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0014] Figure 1 This is a schematic diagram of the rotor edge distribution of the present invention; Figure 2This is a schematic diagram of the flow direction of the rubber material of the present invention; Figure 3 Schematic diagram of the gap between the two rotors in phase change according to the present invention; Figure 4 This is a schematic cross-sectional view of a single ridge of a rotor according to the present invention; Figure 5 Schematic diagram of two rotors of the present invention.

[0015] Description of reference numerals: 1. Rotor body; 2. Long ridge; 3. First short ridge; 4. Second short ridge; 5. Rib top surface; 6. Rib facing rubber surface; 7. Rib back rubber surface. DETAILED DESCRIPTION

[0016] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0017] The present invention provides Figures 1 to 5 A novel high-distribution intermeshing rotor of an internal mixer is shown, comprising: The rotor body 1, the long rib 2, the first short rib 3 and the second short rib 4 are all spirally protruded on the outer circumference of the rotor body 1. The first short rib 3 is 180 degrees in phase with the long rib 2, and the second short rib 4 is 270 degrees in phase with the long rib 2. The cross-sections of the long rib 2, the first short rib 3 and the second short rib 4 all include a rib top surface 5, a rib facing rubber surface 6 and a rib back rubber surface 7. The width of the rib top surface 5 is 0.08 of the outer diameter of the rotor body 1, the slope angle of the rib facing rubber surface 6 is 68°, and the slope angle of the rib back rubber surface 7 is 74°.

[0018] The length of the long ridge 2 is 0.75 to 0.85 times the axial length of the rotor body 1, and the helix angle of the long ridge 2 is 30° to 40°, so that the long ridge 2 can provide stable shear force over most of the axial length of the rotor. At the same time, a reasonable range of the helix angle can ensure smooth flow of materials on the long ridge 2, avoiding material accumulation or excessive shearing.

[0019] The length of the first short edge 3 is 0.2 to 0.3 of the axial length of the rotor body 1 , and the helix angle of the first short edge 3 is 30° to 40°, so that the first short edge 3 can generate a strong shear force in a local area, further enhancing the mixing and dispersion effect of the material.

[0020] The length of the second short edge 4 is 0.3-0.4 of the axial length of the rotor body 1 , and the helix angle of the second short edge 4 is 25°-35°, which can produce different shearing effects in another local area of ​​the rotor.

[0021] The intersection area of ​​the cross section of the long ridge 2 , the first short ridge 3 and the second short ridge 4 with the cross section of the rotor body 1 accounts for 0.2 of the cross section area of ​​the ridge.

[0022] The surfaces of the rotor body 1, the long ribs 2, the first short ribs 3 and the second short ribs 4 are all provided with a layer of porcelain-resistant coating, thereby improving the wear resistance and service life of the rotor.

[0023] The cross-sectional shapes of the long edge 2, the first short edge 3 and the second short edge 4 are asymmetrically designed to optimize the flow path of the rubber material and improve the mixing efficiency.

[0024] In the present invention, the long edge 2 of rotor a is in meshing relationship with the first short edge 3 and the second short edge 4 of rotor b, and the long edge 2 of rotor b is in meshing relationship with the first short edge 3 and the second short edge 4 of rotor a. Through the spiral distribution of the long edge 2, the first short edge 3 and the second short edge 4 and the specific phase difference design, the material can flow along a complex path between the rotors, forming a multi-directional shear field, effectively breaking the agglomeration of the material, so that the material can be mixed more evenly during the mixing process, significantly improving the mixing effect, and reducing product quality problems caused by uneven mixing. The optimized design of the length, spiral angle and cross-sectional intersection area of ​​the long edge 2, the first short edge 3 and the second short edge 4 with the cross-sectional area of ​​the rotor body 1 further optimizes the flow path and shear effect of the material between the rotors; The cross-sections of the long edge 2, the first short edge 3 and the second short edge 4 all include an edge top surface 5, an edge facing rubber surface 6 and an edge back rubber surface 7. The slope angle of the edge facing rubber surface 6 is 68°, and the slope angle of the edge back rubber surface 7 is 74°. The slopes of the edge facing rubber surface 6 and the edge back rubber surface 7 are larger than those of traditional rotors, forming a wedge-shaped feed port, which enhances the ability to grasp large block rubber and flaky rubber. The width of the edge top surface 5 is 0.08 of the outer diameter of the rotor body 1. The width of the edge top surface 5 is wider than that of the traditional shear-type rotor, and it has a better cooling effect on the rubber when it acts on the inner wall of the mixing chamber, and the temperature rise is slow.

[0025] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A new type of high-distribution meshing rotor for internal mixer, characterized in that: include: A rotor body (1), a long ridge (2), a first short ridge (3) and a second short ridge (4), wherein the long ridge (2), the first short ridge (3) and the second short ridge (4) are all spirally convexly arranged on the outer peripheral surface of the rotor body (1), the phase of the first short ridge (3) relative to the long ridge (2) is 180 degrees, and the phase of the second short ridge (4) relative to the long ridge (2) is 270 degrees; The cross sections of the long ridge (2), the first short ridge (3) and the second short ridge (4) all include a ridge top surface (5), a ridge facing rubber surface (6) and a ridge back rubber surface (7); the width of the ridge top surface (5) is 0.08 of the outer diameter of the rotor body (1); the slope angle of the ridge facing rubber surface (6) is 68°; and the slope angle of the ridge back rubber surface (7) is 74°.

2. The novel high-distribution meshing rotor for an internal mixer according to claim 1, characterized in that: The length of the long edge (2) is 0.75 to 0.85 times the axial length of the rotor body (1), and the helical angle of the long edge (2) is 30° to 40°.

3. The novel high-distribution meshing rotor for an internal mixer according to claim 1, characterized in that: The length of the first short edge (3) is 0.2 to 0.3 of the axial length of the rotor body (1), and the helical angle of the first short edge (3) is 30° to 40°.

4. The novel high-distribution meshing rotor for an internal mixer according to claim 1, characterized in that: The length of the second short edge (4) is 0.3 to 0.4 of the axial length of the rotor body (1), and the helical angle of the second short edge (4) is 25° to 35°.

5. The novel high-distribution meshing rotor for an internal mixer according to claim 1, characterized in that: The intersection area of ​​the cross-section of the long edge (2), the first short edge (3) and the second short edge (4) with the cross-section of the rotor body (1) accounts for 0.2 of the cross-sectional area of ​​the edge.

6. The novel high-distribution meshing rotor for an internal mixer according to claim 1, characterized in that: The surfaces of the rotor body (1), the long ridge (2), the first short ridge (3) and the second short ridge (4) are all provided with a wear-resistant coating.

7. The novel high-distribution meshing rotor for an internal mixer according to claim 1, characterized in that: The cross-sectional shapes of the long edge (2), the first short edge (3) and the second short edge (4) are asymmetrically designed.

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