Search

CN-122008429-A - Double-shaft mixer for high polymer and novel modified material

CN122008429ACN 122008429 ACN122008429 ACN 122008429ACN-122008429-A

Abstract

The application relates to the technical field of polymer material processing equipment, in particular to a double-shaft mixer for polymer and novel modified materials, which comprises a mixing box, wherein two mixing cavities which are symmetrically arranged are arranged in the mixing box, the two mixing cavities are tangentially communicated at the middle part to form a connecting part, the two mixing cavities are communicated through the connecting part to form a structure with an overall cross section of 8-shaped, a stirrer is arranged in the mixing cavities and is used for stirring and mixing materials in the mixing cavities, the stirrer comprises rotating shafts which are rotatably arranged in the two mixing cavities, the rotating shafts are coaxial with the mixing cavities, a plurality of stirring blades are arranged on the rotating shafts, the stirring blades on the two rotating shafts are overlapped in the connecting part to form an intersection, and the stirring blades on the two rotating shafts are staggered at the upper side and the lower side.

Inventors

  • QIN WEIMING

Assignees

  • 佛山市奔浩塑料机械有限公司

Dates

Publication Date
20260512
Application Date
20260409

Claims (9)

  1. 1. The double-shaft mixer for the high polymer and the novel modified material comprises a mixing box (1) and is characterized in that two symmetrically arranged mixing cavities (2) are arranged in the mixing box (1), the two mixing cavities (2) are tangentially communicated at the middle part to form a connecting part (3), and the two mixing cavities (2) are communicated through the connecting part (3) to form a structure with an overall cross section in a shape of 8; The stirrer (4) is used for stirring and mixing materials in the mixing cavity (2); The stirrer (4) comprises rotating shafts (41) which are arranged in the two mixing cavities (2) in a rotating mode, the rotating shafts (41) and the mixing cavities (2) are coaxial, a plurality of stirring blades (5) are arranged on the rotating shafts (41), the stirring blades (5) on the two rotating shafts (41) are overlapped in the connecting portion (3) to form an intersection, and the stirring blades (5) on the two rotating shafts (41) are staggered on the upper side and the lower side.
  2. 2. The double-shaft mixer for high polymers and novel modified materials as claimed in claim 1, wherein the stirring blade (5) comprises a connecting ring (51) arranged on the rotating shaft (41), a plurality of blades (52) distributed circumferentially are arranged on the connecting ring (51), one ends of the blades (52) extend to be close to the wall of the mixing cavity (2) and extend into the connecting part (3), and the blades (52) on the other rotating shaft (41) are overlapped and intersected in the connecting part (3).
  3. 3. The double-shaft mixer for high polymers and novel modified materials as claimed in claim 2, wherein the end parts of the blades (52) are provided with protruding parts (53), and when the two rotating shafts (41) rotate, the protruding parts (53) which are oppositely arranged are mutually matched to form shearing force for dispersing materials.
  4. 4. The double-shaft mixer for high polymers and novel modified materials as claimed in claim 2, wherein the blades (52) and the axis direction of the rotating shaft (41) form a preset inclination angle, and the preset inclination angle is used for driving materials in the mixing cavity (2) to realize axial and radial multidimensional flow so as to further improve the mixing uniformity of the materials.
  5. 5. The double-shaft mixer for high polymers and novel modified materials as claimed in claim 1, wherein the diameters of the two mixing cavities (2) are one by one, and the rotation speeds of the rotating shafts (41) in the small-diameter mixing cavity (2) and the large-diameter mixing cavity (2) are different.
  6. 6. The double-shaft mixer for the polymer and the novel modified material according to claim 5, wherein a circulation mixer (6) is arranged in the mixing cavity (2); the circulation mixer (6) comprises a rotating shaft (41) provided with a spiral conveying blade (61), and the spiral conveying blade (61) is used for conveying materials upwards.
  7. 7. The double-shaft mixer for high polymers and novel modified materials as claimed in claim 6, wherein the bottom of the mixing cavity (2) is provided with a guiding inclined plane (62), the guiding inclined planes (62) in the two mixing cavities (2) are intersected in the connecting part (3) to form two joint surfaces (63), the two joint surfaces are respectively tangent with the cavity walls of the two mixing cavities (2), and the joint surfaces smoothly transition along the communicating direction of the connecting part (3) and are used for guiding the material at the bottom of the mixing cavities (2) to flow to the two mixing cavities (2) so as to assist the material to be converged to the spiral conveying blade (61).
  8. 8. The double-shaft mixer for the polymer and the novel modified material according to claim 6 is characterized in that auxiliary cylinders (64) are symmetrically arranged on two sides of the mixing box (1), and the auxiliary cylinders (64) are tangentially communicated with the mixing cavity (2) on one side corresponding to the auxiliary cylinders; The auxiliary cylinder (64) is rotatably provided with a transmission shaft (65), and the transmission shaft (65) is provided with a shearing fluted disc (66) positioned in the auxiliary cylinder (64) along the edge.
  9. 9. The double-shaft mixer for high polymers and novel modified materials as claimed in claim 8, wherein the rotary shaft (41) is internally provided with an air inlet hole (67), and the blade (52) is internally provided with an air guide hole (68) communicated with the air inlet hole (67).

Description

Double-shaft mixer for high polymer and novel modified material Technical Field The application relates to the technical field of polymer material processing equipment, in particular to a double-shaft mixer for polymer and novel modified materials. Background The polymer material is also called a polymer material, is an organic material which is formed by taking a polymer compound as a matrix and matching with a small amount of auxiliary agents on the molecular weight, and the polymer material is formed by connecting a plurality of repeated structural units through covalent bonds, has the basic characteristics of light weight, easy processing, adjustable mechanical property, corrosion resistance and the like, is widely applied to various fields of industrial production, and core products comprise plastics such as polyethylene, polypropylene and the like, rubber such as natural rubber, nitrile rubber and the like, fibers such as polyester fibers and polymer resins such as polyurethane, epoxy resin and the like. The novel modified material is a polymer composite material which takes a basic polymer material as a matrix, introduces components such as filler, auxiliary agent, functional monomer and the like through a physical, chemical or composite method, optimizes and expands the mechanical, thermal, electrical and other performances of the polymer composite material, can be divided into glass fiber/carbon fiber reinforced modification, nano filler filling modification, conductive flame-retardant and other functional modification, polymer base alloy composite modification and other types, and is suitable for high-end field requirements such as high-end manufacturing, new energy, electronic information and the like, and is a development focus of the current polymer material industry. The mixing of the polymer and the novel modified material is an indispensable core pre-process in the production and processing of the polymer and the novel modified material, and the performance and quality of the modified material and the feasibility of subsequent molding processing are directly determined, essentially, the basic polymer matrix and various modified components are uniformly dispersed, tightly combined and system compatible through mechanical action. The prior art is generally used for completing pretreatment procedures by adopting a traditional single-shaft high-speed mixer aiming at the mixed processing of high polymers and novel modified materials, such equipment takes a single-shaft, single-motor and cylindrical mixing pot as a core structure, drives materials to rise and fall back along the cylinder wall under the action of centrifugal force by means of high-speed rotation of stirring blades, forms cyclic turning, realizes temperature rise by means of internal friction and external auxiliary heating between the materials, and finally completes dispersion, cladding and preplasticizing of the materials. However, with the continuous appearance of novel modified materials with high performance, high filling, nanoscale, conductivity, antistatic and the like, the limitations of the traditional single-shaft mixing equipment are increasingly prominent, and the processing requirements of high precision, high uniformity and high dispersity are difficult to meet. However, when the polymer and the novel modified material are mixed, the prior art realizes mixing by means of blade rotation and material friction, has no special shearing structure and strong shearing area, cannot effectively break up aggregates for easily aggregated components such as nanofiller, functional powder, reinforcing fiber and the like, is difficult to realize microcosmic uniform dispersion, and directly leads to uneven performance and functional failure of the modified material. In addition, the mixing dead zone exists, the mixing is incomplete, the materials near the wall of the cylinder and in the corner area of the bottom are difficult to stir fully due to the cylindrical pot body structure, the materials are in a low-speed flowing even static state for a long time, the mixing dead zone is formed, and the materials are left, uneven in dispersion and poor in batch stability. Only can realize the circular lifting movement of the materials along the cylinder wall, lacks axial, radial, shearing and folding multi-dimensional movements, has poor suitability for a high-proportioning, multi-component and high-viscosity modification system, and has long mixing time and low production efficiency. Based on this, in the state of the art, there is still room for improvement in the way polymers and new modifying materials are mixed. Disclosure of Invention In order to solve the technical problems, the application provides a double-shaft mixer for a polymer and a novel modified material, which adopts the following technical scheme: The double-shaft mixer for the high polymer and the novel modified material comprises a mixing box, wherein two symmetrically arr