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CN-121988271-A - Kneading-pressing type mixing reactor based on hydraulic drive and working method

CN121988271ACN 121988271 ACN121988271 ACN 121988271ACN-121988271-A

Abstract

The invention relates to the technical field of reactors, in particular to a kneading-pressing type mixing reactor based on hydraulic driving and a working method thereof. The mixing cavity section module is provided with a flexible inner container for containing materials, a plurality of independent flexible driving cavities are arranged outside the mixing cavity section module, the mixing cavity section module comprises at least one annular cavity section and one substrate cavity section, the power source module conveys or recovers working media to each driving cavity through a pipeline system with independent control valves to drive the working media to expand or contract, so that local extrusion force is applied to the wall surface of the flexible inner container from the outer side, the microcontroller controls each valve to act according to a preset strategy to drive each cavity section to act cooperatively, so that the flexible inner container generates non-rotary mode deformation kneading and pressing action, three-dimensional gentle mixing of the materials is realized, the safety risk of rotating parts is fundamentally eliminated, and the problems that the mixing uniformity of high-viscosity materials is poor and the mixing heat release is difficult to remove rapidly are solved.

Inventors

  • HAN FENGLIN
  • WU JINLONG
  • YANG JING

Assignees

  • 中南大学

Dates

Publication Date
20260508
Application Date
20260205

Claims (10)

  1. 1. A kneading-press type mixing reactor based on hydraulic driving, characterized by comprising: The mixing cavity section module comprises a flexible inner container (1) for containing materials to be mixed, wherein a plurality of independent flexible driving cavities which are elastically deformed are arranged outside the flexible inner container (1), each flexible driving cavity comprises at least one annular cavity section arranged on the circumferential side surface of the flexible inner container (1) and at least one base cavity section arranged at the bottom of the flexible inner container (1), each flexible driving cavity deforms when working medium is filled or discharged, and local extrusion force is applied to the wall surface of the flexible inner container (1) from the outer side; The power source module comprises a hydraulic pump and a pipeline system for circulating working media, wherein the pipeline system is connected with the liquid inlet and the liquid outlet of each flexible driving cavity through independent control valves and is used for conveying or recovering the working media to one or more designated flexible driving cavities so as to drive each cavity section to expand and contract independently or cooperatively; and the microcontroller is in signal connection with each control valve in the power source module, and controls the action sequence and state of each flexible driving cavity according to a preset time sequence and pressure control mode, so that the flexible liner (1) generates non-rotary deformation kneading action, and the materials in the flexible liner are subjected to three-dimensional mixing.
  2. 2. The kneading-pressing type mixing reactor based on hydraulic driving according to claim 1, wherein one or more sensors for monitoring the mixing state are arranged on the outer wall surface of the flexible liner (1), the sensors comprise at least one of a flexible capacitive strain sensor, a flexible pressure sensor and a flexible temperature sensor, and the sensors are in signal connection with a microcontroller to form a closed-loop feedback control loop for adjusting driving parameters in real time.
  3. 3. A kneading and pressing type mixing reactor based on hydraulic driving according to claim 1, characterized in that the annular cavity sections are arranged in a plurality along the axial direction of the flexible liner (1), and a limiting hard gasket (11) is arranged between the adjacent annular cavity sections and is used for guiding the deformation direction of each annular cavity section during liquid filling expansion.
  4. 4. A kneading and pressing type mixing reactor based on hydraulic driving according to claim 3, wherein at least one annular chamber section is a discontinuous annular structure divided into a plurality of arc-shaped subchamber sections, each subchamber section being capable of being controlled independently.
  5. 5. A kneading and pressing type mixing reactor based on hydraulic driving according to claim 1, wherein the base chamber section has a discontinuous cylindrical structure, which is divided into a plurality of sector-shaped or semicircular subchamber sections, each subchamber section being capable of being controlled independently.
  6. 6. A kneading and pressing type mixing reactor based on hydraulic driving according to claim 1, characterized in that it further comprises a rigid casing (2), the whole of the rigid casing (2) is cylindrical, and is formed by fixedly connecting two semi-cylindrical shells, and the inner wall of the rigid casing is provided with a plurality of layers of circumferential grooves for installing a flexible driving cavity and a limiting hard gasket (11).
  7. 7. A kneading and pressing type mixing reactor based on hydraulic driving according to claim 1, wherein the power source module further comprises a constant temperature tank, and the pipe system forms a loop for circulating the working medium between the flexible driving chamber and the constant temperature tank for heating or cooling the materials during the mixing process.
  8. 8. The hydraulically driven kneading and mixing reactor of claim 1, wherein the microcontroller is configured to perform at least one of a side-to-side alternating kneading and pressure control strategy, a loop peristaltic kneading and pressure control strategy, or a three-dimensional tumbling kneading and pressure control strategy to form different mixed flow patterns.
  9. 9. The kneading-pressing type mixing reactor based on hydraulic driving according to claim 1, wherein the working medium of the flexible driving cavity is deionized water, water-glycol mixed liquid or other hydraulic oil, and the flexible liner (1) is made of flexible high polymer materials with fatigue resistance and hydraulic circulation resistance.
  10. 10. A method of operating a hydraulically driven kneading-press-based mixing reactor according to any of the claims 1-9, comprising the steps of: Adding materials to be mixed into the flexible liner (1), and then sealing the mixing reactor; The microcontroller controls the power source module according to a preset control strategy, and transmits working medium to one or more appointed flexible driving cavities at a specific time sequence and pressure so as to expand the working medium and apply local extrusion force to the wall surface of the flexible liner (1); after the flexible driving cavity reaches a set expansion state, maintaining pressure or deformation for a certain time, and then controlling the working medium to be discharged from the flexible driving cavity so as to shrink and reset; The expansion and contraction actions in the steps S2 and S3 are sequentially or simultaneously executed by circularly controlling a plurality of flexible driving cavities according to a preset space sequence and/or time sequence delay, so that the wall surface of the flexible liner (1) generates non-rotating and patterned periodic deformation kneading pressure, and the internal materials are driven to generate three-dimensional folding-flattening-refolding macroscopic flow and migration, thereby realizing mixing; When the circularly flowing working medium flows through the flexible driving cavity, the working medium exchanges heat with the flexible liner (1), so that heat is absorbed or provided, and the temperature control of a reaction system is realized.

Description

Kneading-pressing type mixing reactor based on hydraulic drive and working method Technical Field The invention relates to the technical field of reactors, in particular to a kneading-pressing type mixing reactor based on hydraulic driving and a working method. Background The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art. In various industrial fields such as chemical industry, energy materials, pharmacy, food and the like, the uniform mixing of high-viscosity materials (such as high-filled electrode slurry, polymer melt, energetic composite materials, pasty drug intermediates and the like) is a key and very challenging process. The materials generally show strong non-Newtonian fluid characteristics, the flow resistance is high, the traditional stirring equipment relying on high-speed rotation shearing action is easy to form a mixing 'dead zone' around a kettle wall and a stirring shaft in the running process, and the sufficient convection and dispersion of the macroscopic and microscopic dimensions of the materials are difficult to realize. Although the mixing effect can be improved to some extent by improving the impeller form, adding auxiliary scraping walls or adopting mechanical schemes such as double planetary stirring, all the improvements do not depart from the basic structure of a central rotating shaft and a rigid impeller, the adaptability to materials with complex rheological characteristics is limited, and the uniformity bottleneck caused by the equipment structure cannot be fundamentally eliminated. Secondly, for high-energy, inflammable and explosive materials or materials sensitive to shearing (such as energetic crystals), the traditional stirrer relies on moving parts such as a high-speed rotating shaft, an impeller and the like, and sparks or local overheating are easily generated due to friction and collision in the running process, so that serious potential safety hazards are formed. At the same time, long-term wear at the dynamic seal of the rotating shaft may lead to material leakage, further exacerbating safety and environmental risks. Disclosure of Invention The invention provides a kneading and pressing type mixing reactor based on hydraulic drive and a working method thereof, which solve the problems of safety risk, insufficient mixing uniformity and difficult quick removal of mixing heat release caused by rotating parts in the existing high-energy material and high-viscosity mixing technology. In order to achieve the above purpose, the present invention adopts the following technical scheme: in a first aspect, the invention provides a hydraulic drive-based kneading-press type mixing reactor, comprising: The mixing cavity section module comprises a flexible inner container (1) for containing materials to be mixed, wherein a plurality of independent flexible driving cavities which are elastically deformed are arranged outside the flexible inner container (1), each flexible driving cavity comprises at least one annular cavity section arranged on the circumferential side surface of the flexible inner container (1) and at least one base cavity section arranged at the bottom of the flexible inner container (1), each flexible driving cavity deforms when working medium is filled or discharged, and local extrusion force is applied to the wall surface of the flexible inner container (1) from the outer side; The power source module comprises a hydraulic pump and a pipeline system for circulating working media, wherein the pipeline system is connected with the liquid inlet and the liquid outlet of each flexible driving cavity through independent control valves and is used for conveying or recovering the working media to one or more designated flexible driving cavities so as to drive each cavity section to expand and contract independently or cooperatively; and the microcontroller is in signal connection with each control valve in the power source module, and controls the action sequence and state of each flexible driving cavity according to a preset time sequence and pressure control mode, so that the flexible liner (1) generates non-rotary deformation kneading action, and the materials in the flexible liner are subjected to three-dimensional mixing. Further, the outer wall surface of the flexible liner (1) is provided with one or more sensors for monitoring the mixing state, the sensors comprise at least one of a flexible capacitive strain sensor, a flexible pressure sensor and a flexible temperature sensor, and the sensors are in signal connection with a microcontroller to form a closed-loop feedback control loop for adjusting driving parameters in real time. Further, a plurality of annular cavity sections are arranged along the axial direction of the flexible liner (1), and a limiting hard gasket (11) is arranged between the adjacent annular cavity sections and used for guiding the deformation