Mixed reaction device
By designing multi-directional stirring blades and scrapers, and combining them with a PLC controller and stirring drive system, the problems of low stirring efficiency and uneven mixing in the existing technology have been solved, and uniform mixing of materials in the production of methyl vinyl silicone rubber has been achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HOSHINE SILICON (SHANSHAN) IND CO LTD
- Filing Date
- 2025-04-01
- Publication Date
- 2026-04-21
AI Technical Summary
In existing methyl vinyl silicone rubber production, the stirring system of the mixing reaction device has low efficiency, resulting in uneven material mixing and making it difficult to meet the mixing requirements of materials with different molecular weights.
The design employs multi-directional stirring blades and scrapers, combined with a PLC controller and stirring drive system. Through multi-directional stirring and the cooperation of the scrapers, it achieves uniform mixing of materials and adapts to the mixing needs of different materials.
It improves the mixing uniformity of materials, reduces material agglomeration, and meets the mixing requirements of materials with different molecular weights.
Smart Images
Figure CN224142230U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of polymerization reaction technology and is a mixing reaction device. Background Technology
[0002] The existing methyl vinyl silicone rubber is produced by polymerization in a polymerization reactor equipped with a stirring system. However, the existing stirring system has relatively simple blades with a fixed direction, which means that the material cannot be sufficiently disturbed during the stirring process. At the same time, the dispersion of small particles is poor, and the mixing efficiency of small particles with siloxane is low. Summary of the Invention
[0003] This invention provides a mixing reaction device that overcomes the shortcomings of the prior art. It can effectively solve the problems of low stirring efficiency and uneven material mixing in the stirring system of the existing mixing reaction device in the production of methyl vinyl silicone rubber, and cannot meet the mixing requirements of materials with different molecular weights.
[0004] The technical solution of this utility model is achieved through the following measures: a mixing reaction device, including a reaction vessel body, a stirring shaft, a stirring blade unit, a stirring scraper and a stirring drive system. The reaction vessel body is provided with a stirring shaft with its upper end located above it. The upper end of the stirring shaft is provided with a stirring drive system that enables it to rotate. At least two first fixed shafts arranged in the left and right directions are arranged vertically and vertically in the middle of the stirring shaft. A stirring blade unit is provided between each pair of adjacent vertically and vertically first fixed shafts. A stirring scraper is fixedly installed at the lower end of the stirring shaft.
[0005] The following are further optimizations and / or improvements to the above-mentioned utility model technical solution:
[0006] The aforementioned stirring blade unit includes a second fixed shaft, a front helical blade, a rear helical blade, a left helical blade, and a right helical blade. A second fixed shaft is provided on each stirring shaft at a position corresponding to the position between two adjacent first fixed shafts.
[0007] The upper end of the front helical blade is movably connected to the left end of the corresponding first fixed shaft via a bushing; the middle part of the front helical blade is movably connected to the front end of the corresponding second fixed shaft via a bushing; the lower end of the front helical blade is movably connected to the right end of the corresponding first fixed shaft via a bushing; the upper end of the rear helical blade is movably connected to the right end of the corresponding first fixed shaft via a bushing; the middle part of the rear helical blade is movably connected to the rear end of the corresponding second fixed shaft via a bushing; and the lower end of the rear helical blade is movably connected to the left end of the corresponding first fixed shaft via a bushing. The upper end of the left helical blade is movably connected to the left part of the first fixed shaft at its corresponding position via a bushing; the middle part of the left helical blade is movably connected to the rear part of the second fixed shaft at its corresponding position via a bushing; the lower end of the left helical blade is movably connected to the right part of the first fixed shaft at its corresponding position via a bushing; the upper end of the right helical blade is movably connected to the right part of the first fixed shaft at its corresponding position via a bushing; the middle part of the right helical blade is movably connected to the front part of the second fixed shaft at its corresponding position via a bushing; and the lower end of the right helical blade is movably connected to the left part of the first fixed shaft at its corresponding position via a bushing.
[0008] The above also includes a PLC controller. The PLC controller and the stirring drive system together constitute the reaction control unit, and the stirring drive system is connected to the PLC controller.
[0009] The above-mentioned stirring shaft has three first fixed shafts arranged horizontally and vertically at intervals in the middle.
[0010] The aforementioned stirring scraper has a hollow structure in the middle, and the side edges of the stirring scraper are attached to the bottom of the reaction vessel.
[0011] The reactor body is equipped with a jacket, and the upper part of the reactor body is equipped with a main material inlet, an auxiliary material inlet, and a first level gauge. The bottom of the reactor body is equipped with a discharge port.
[0012] A thermometer and a second level gauge are installed at the bottom of the aforementioned reactor body.
[0013] The spread angles of the aforementioned front helical blade, rear helical blade, left helical blade, and right helical blade range from 35° to 115°.
[0014] This utility model has a reasonable and compact structure and is easy to use. It utilizes the adjustable shape and position of the stirring blades and the stirring scraper at the bottom of the stirring shaft to stir from multiple directions according to the characteristics of the materials. The stirring drive system adjusts the optimal stirring speed to adapt to the mixing needs of different materials, gradually improves the mixing uniformity, and reduces the agglomeration of materials. Attached Figure Description
[0015] Appendix Figure 1 This is a schematic diagram of the structure of this utility model.
[0016] Appendix Figure 1 The codes in the diagram are as follows: 1 for reactor body, 2 for stirring shaft, 3 for stirring scraper, 4 for front helical blade, 5 for first fixed shaft, 6 for second fixed shaft, 7 for stirring drive system, 8 for jacket, 9 for main material inlet, 10 for auxiliary material inlet, 11 for first level gauge, 12 for discharge port, 13 for thermometer, 14 for second level gauge, 15 for rear helical blade, 16 for left helical blade, 17 for right helical blade, and 18 for shaft sleeve. Detailed Implementation
[0017] This invention is not limited to the following embodiments; the specific implementation method can be determined according to the technical solution of this invention and the actual situation.
[0018] Unless otherwise specified, all equipment and devices used in this invention are existing, publicly known, and commonly used equipment and devices in the field.
[0019] In this utility model, for ease of description, the description of the relative positions of the components is based on the appendix to the specification. Figure 1 The layout is described using a diagrammatic method, such as the positional relationships of front, back, top, bottom, left, and right, which are based on the instructions attached. Figure 1 The orientation of the layout is determined by the direction of the map.
[0020] The present invention will be further described below with reference to the embodiments and accompanying drawings:
[0021] Example 1: As shown in the attached document Figure 1 As shown, the mixing reaction device includes a reaction vessel body 1, a stirring shaft 2, a stirring blade unit, a stirring scraper 3, and a stirring drive system 7. The reaction vessel body 1 is equipped with a stirring shaft 2 located at its upper end, and the upper end of the stirring shaft 2 is equipped with a stirring drive system 7 that enables it to rotate. At least two first fixed shafts 6 arranged horizontally are arranged vertically at intervals in the middle of the stirring shaft 2. A stirring blade unit is provided between each pair of adjacent first fixed shafts 6. A stirring scraper 3 is fixedly installed at the lower end of the stirring shaft 2.
[0022] In this invention, a siloxane mixture undergoes heating and dehydration treatment in a reaction vessel 1. After reaching a certain temperature, end-capping agents and other auxiliary materials are added for polymerization to produce methyl vinyl silicone rubber. During this process, the stirring blade unit and the stirring scraper 3 play crucial roles. These components ensure uniform heating of the materials and ensure even contact between the siloxane and auxiliary materials, promoting a more complete polymerization reaction.
[0023] The above-mentioned mixing reaction apparatus can be further optimized and / or improved according to actual needs:
[0024] Example 2: Its difference from Example 1 is as follows: (See attached) Figure 1As shown, the stirring blade unit includes a second fixed shaft 6, a front helical blade 4, a rear helical blade 15, a left helical blade 16, and a right helical blade 17. The stirring shaft 2 corresponding to the position between each pair of adjacent first fixed shafts 6 is provided with a second fixed shaft 6 arranged in a front-back direction.
[0025] The upper end of the front helical blade 4 is movably connected to the left end of the corresponding first fixed shaft 6 via a bushing 18. The middle part of the front helical blade 4 is movably connected to the front end of the corresponding second fixed shaft 6 via a bushing 18. The lower end of the front helical blade 4 is movably connected to the right end of the corresponding first fixed shaft 6 via a bushing 18. The upper end of the rear helical blade 15 is movably connected to the right end of the corresponding first fixed shaft 6 via a bushing 18. The middle part of the rear helical blade 15 is movably connected to the rear end of the corresponding second fixed shaft 6 via a bushing 18. The lower end of the rear helical blade 15 is movably connected to the left end of the corresponding first fixed shaft 6 via a bushing 18. The left helical blade... The upper end of the spiral blade 16 is movably connected to the left part of the first fixed shaft 6 at its corresponding position via a bushing 18. The middle part of the left spiral blade 16 is movably connected to the rear part of the second fixed shaft 6 at its corresponding position via a bushing 18. The lower end of the left spiral blade 16 is movably connected to the right part of the first fixed shaft 6 at its corresponding position via a bushing 18. The upper end of the right spiral blade 17 is movably connected to the right part of the first fixed shaft 6 at its corresponding position via a bushing 18. The middle part of the right spiral blade 17 is movably connected to the front part of the second fixed shaft 6 at its corresponding position via a bushing 18. The lower end of the right spiral blade 17 is movably connected to the left part of the first fixed shaft 6 at its corresponding position via a bushing 18.
[0026] In this invention, the front helical blade 4, the rear helical blade 15, the left helical blade 16, and the right helical blade 17 are fixed to the corresponding bushings 18 by welding. The bushings 18 are installed in a set with the first fixed shaft 5 and the second fixed shaft 6. Therefore, under the action of the material, the relative positions of the front helical blade 4, the rear helical blade 15, the left helical blade 16, and the right helical blade 17 are adjustable, and the blade shape is also multi-directional to adapt to the mixing requirements of different materials.
[0027] As needed, the stirring blade unit will generate a motion mode that combines axial flow and radial flow during operation. The front helical blade 4 and the rear helical blade 15, which are close to the reactor body 1, push the material from the periphery of the reactor body 1 towards the center, while the left helical blade 16 and the right helical blade 17, which are close to the rotating shaft 2, push the material from the center to the periphery, forming a strong convection circulation. After the material rises along the edge of the blade, it falls due to gravity, forming a three-dimensional flow field, which further improves the mixing uniformity.
[0028] Example 3: Its difference from Examples 1 to 2 is as follows: (See attached) Figure 1As shown, it also includes a PLC controller. The PLC controller and the stirring drive system 7 together constitute the reaction control unit. The stirring drive system 7 is connected to the PLC controller.
[0029] As needed, the stirring drive system 7 consists of a motor, a reducer, a coupling, and a mechanical seal. The reaction control unit automatically adjusts the speed of the stirring shaft 2 according to the characteristics of the reactants.
[0030] Example 4: Its difference from Examples 1 to 3 is as follows: (See attached) Figure 1 As shown, the stirring shaft 2 has three first fixed shafts 6 arranged horizontally and vertically at intervals in the middle.
[0031] Example 5: It differs from Examples 1 to 4 in that, as shown in the appendix... Figure 1 As shown, the stirring scraper 3 has a hollow structure in the middle, and the side edge of the stirring scraper 3 is attached to the bottom of the reaction vessel body 1.
[0032] As needed, while ensuring that the stirring scraper 3 can rotate freely, the side edge of the stirring scraper 3 should be as close as possible to the conical bottom of the reactor body 1 to ensure that the reactants can be mixed evenly and that there are no dead corners in the reactor body 1.
[0033] Example 6: Its difference from Examples 1 to 5 is as follows: (See attached) Figure 1 As shown, the reactor body 1 is equipped with a jacket 8 on the outside, and the upper part of the reactor body 1 is equipped with a main material inlet 9, an auxiliary material inlet 10, and a first liquid level gauge 11. The bottom of the reactor body 1 is equipped with a discharge port 12.
[0034] Example 7: Its difference from Examples 1 to 6 is as follows: (See attached) Figure 1 As shown, a thermometer 13 and a second level gauge 14 are installed at the lower part of the reactor body 1.
[0035] Example 8: It differs from Examples 1 to 7 in that: as shown in the appendix Figure 1 As shown, the front helical blade 4, the rear helical blade 15, the left helical blade 16, and the right helical blade 17 have an aspect angle of 35° to 115°.
[0036] Depending on the needs, the pipelines and equipment of this mixing reaction unit may also be equipped with conventional valves, thermometers, and pressure gauges known in the art, according to production requirements. The PLC controller can be a Siemens S7-1500, which is equipped with a Yokogawa CS3000 DCS control system.
[0037] The above technical features constitute various embodiments of this utility model, which have strong adaptability and implementation effect. Unnecessary technical features can be added or removed according to actual needs to meet the needs of different situations.
[0038] The usage process of this utility model embodiment is as follows: First, the siloxane mixture is injected into the reactor body 1 through the main material inlet 9 for heating and dehydration, and at the same time, the stirring drive system 7 is started; then, auxiliary materials are added through the auxiliary material inlet 10 for polymerization reaction, and at the same time, the stirring drive system 7 adjusts the speed of the stirring shaft 2; finally, the polymerization reaction ends, the reaction product is output through the discharge port 12, and the stirring drive system 7 stops.
Claims
1. A hybrid reaction apparatus, characterized by The reactor includes a reaction vessel body, a stirring shaft, stirring blade units, stirring scrapers, and a stirring drive system. The reaction vessel body is equipped with a stirring shaft located at the top, and the upper end of the stirring shaft is equipped with a stirring drive system that enables it to rotate. At least two first fixed shafts arranged horizontally are arranged vertically at intervals in the middle of the stirring shaft. Stirring blade units are provided between each pair of adjacent first fixed shafts. A stirring scraper is fixedly installed at the lower end of the stirring shaft.
2. The hybrid reaction apparatus of claim 1, wherein The stirring blade unit includes a second fixed shaft, a front helical blade, a rear helical blade, a left helical blade, and a right helical blade. A second fixed shaft is provided on each stirring shaft corresponding to every two adjacent upper and lower first fixed shafts, arranged in a front-rear direction. The upper end of the front helical blade is movably connected to the left end of the corresponding first fixed shaft via a bushing; the middle part of the front helical blade is movably connected to the front end of the corresponding second fixed shaft via a bushing; the lower end of the front helical blade is movably connected to the right end of the corresponding first fixed shaft via a bushing; the upper end of the rear helical blade is movably connected to the right end of the corresponding first fixed shaft via a bushing; and the middle part of the rear helical blade is movably connected to the rear end of the corresponding second fixed shaft via a bushing. The rear helical blade is movably connected to the left end of the corresponding first fixed shaft via a bushing at its lower end; the left helical blade is movably connected to the left part of the corresponding first fixed shaft via a bushing at its upper end; the left helical blade is movably connected to the rear part of the corresponding second fixed shaft via a bushing at its middle part; the left helical blade is movably connected to the right part of the corresponding first fixed shaft via a bushing at its lower end; the right helical blade is movably connected to the right part of the corresponding first fixed shaft via a bushing at its upper end; the right helical blade is movably connected to the front part of the corresponding second fixed shaft via a bushing at its middle part; and the right helical blade is movably connected to the left part of the corresponding first fixed shaft via a bushing at its lower end.
3. The hybrid reaction apparatus according to claim 1 or 2, characterized by It also includes a PLC controller, which together with the stirring drive system constitutes the reaction control unit, and the stirring drive system is connected to the PLC controller.
4. The hybrid reaction apparatus according to claim 1 or 2, characterized by The stirring shaft has three first fixed shafts arranged horizontally and vertically at intervals in the middle.
5. The hybrid reaction apparatus of claim 3, wherein The stirring shaft has three first fixed shafts arranged horizontally and vertically at intervals in the middle.
6. The hybrid reaction apparatus according to claim 1 or 2 or 5, characterized by The stirring scraper has a hollow structure in the middle, and the side edges of the stirring scraper are attached to the inner side of the bottom of the reaction vessel.
7. The mixing reaction apparatus according to claim 6, characterized in that... The reactor body is equipped with a jacket on the outside, and the upper part of the reactor body is equipped with a main material inlet, an auxiliary material inlet, and a first liquid level gauge. The bottom of the reactor body is equipped with a discharge port.
8. The hybrid reaction apparatus according to claim 1 or 2 or 5 or 7, characterized by A thermometer and a second level gauge are installed at the bottom of the reactor body.
9. The mixed reaction apparatus according to claim 2 or 5 or 7, wherein The spread angles of the front helical blade, rear helical blade, left helical blade, and right helical blade range from 35° to 115°.
10. The hybrid reaction apparatus of claim 8, wherein The spread angles of the front helical blade, rear helical blade, left helical blade, and right helical blade range from 35° to 115°.