Intelligent reaction device for preparing environment-friendly degradable fluorocarbon surfactant and preparation process of environment-friendly degradable fluorocarbon surfactant

Abstract

The invention relates to an intelligent reaction device for preparing an environment-friendly degradable fluorocarbon surfactant, which comprises a reaction kettle body and an adjustable stirring device, the adjustable stirring device comprises a main shaft and a movable stirring blade assembly, and one end of an upper rotating rod and one end of a lower rotating rod in the movable stirring blade assembly are connected with a hinged rotating seat; the other end of the lower rotating rod is rotationally connected with the lower end of the spindle; the other end of the upper rotating rod is movably arranged at the upper end of the spindle through a universal coupling and a sliding block. A movable shaft in the main shaft is driven by a driving cylinder to lift; a lower transmission assembly is arranged at the lower end of the movable shaft and drives the lower rotating rod to rotate, an upper transmission assembly is arranged at the upper end of the movable shaft and drives the upper rotating rod to rotate, and the upper transmission assembly drives the upper rotating rod to ascend and descend when ascending and descending, so that the movable stirring blade assembly has the intelligent ascending and descending deformation function, and the position of the stirring rod can be dynamically adjusted. Meanwhile, various sensors in the reaction kettle body can timely acquire and feed back various parameters and state information, such as temperature, pressure and liquid level, in the reaction kettle, so that intelligent self-adaptive adjustment is performed according to real-time change of the liquid level height in the reaction kettle, manual operation is not needed, and the working efficiency is improved. And the materials at the upper end and the lower end in the kettle can be uniformly and efficiently mixed.

Description

Technical Field

[0001] The present invention relates to the technical field of fluorine surfactant preparation equipment, and in particular to an intelligent reaction device for preparing an environmentally friendly and degradable fluorocarbon surfactant and a preparation process thereof. Background Art

[0002] Fluorosurfactants are surfactants that contain fluorine in their molecules. Fluorosurfactants are excellent in reducing surface tension, enhancing wettability and anti-fouling properties. In addition, fluorine surfactants also have good heat resistance, chemical stability and environmental stability, which are advantages that traditional surfactants cannot match.

[0003] PFOS / PFOA fluorinated surfactants are the most common fluorinated surfactants, but they are highly toxic to humans and the environment. In addition, the production cost of electrolytic fluorination is high, and it is often accompanied by complex byproducts and a considerable amount of fluorinated oxygen, resulting in low reaction yields and certain explosion hazards. Studies have shown that by constructing a branched perfluorinated group (D2) on the main chain, a series of highly surface active, non-toxic, degradable and environmentally friendly fluorinated surfactants can be designed and synthesized to replace PFOS / PFOA.

[0004] At present, in the reaction catalysis process of fluorocarbon surfactants, there are problems such as long reaction time, low reaction efficiency and unsatisfactory yield. The stirring blades inside the traditional reactor are generally concentrated at the lower end of the stirring shaft, cannot be adjusted, and are relatively small in number. Therefore, when the liquid level in the reactor is high, the mixing rate of the upper material is significantly different from that of the lower material, resulting in uneven mixing of the upper and lower materials, thereby increasing the mixing reaction time. During the reaction in the traditional reactor, the stirring device cannot fully stir the solid material. Even if the power of the stirring motor is increased, when the liquid in the stirring kettle rotates evenly with the fluctuation of the stirring paddle, some solid materials will usually be concentrated in the center of the liquid rotation and cannot be evenly mixed with the liquid material, resulting in difficulty in reducing the reaction preparation time, and unsatisfactory reaction efficiency and yield. Summary of the invention

[0005] In view of the above problems, the present invention discloses an intelligent reaction device and a preparation process for an environmentally friendly and degradable fluorocarbon surfactant, which can prevent solid materials from accumulating around the main shaft and ensure that the materials are mixed more evenly in the reactor. At the same time, the position of the stirring rod can be dynamically adjusted to perform intelligent and adaptive adjustments according to the real-time changes in the liquid level in the reactor.

[0006] The specific technical solutions are as follows:

[0007] An intelligent reaction device for preparing an environmentally friendly and degradable fluorocarbon surfactant, comprising a reactor body and an adjustable stirring device, wherein the adjustable stirring device comprises a stirring motor, a main shaft, a driving cylinder, a movable shaft, and a movable stirring blade assembly, wherein the main shaft is longitudinally arranged at the center of the reactor body, the upper end of the main shaft is driven to rotate by the stirring motor, and the lower end of the main shaft is rotatably arranged at the bottom end of the reactor body through a bearing seat; at least two movable stirring blade assemblies are circumferentially distributed on the side wall of the main shaft, and the movable stirring blade assembly comprises an upper rotating rod, a lower rotating rod, an articulated rotating seat, and a universal coupling, wherein one end of the upper rotating rod and the lower rotating rod are both rotatably connected to the articulated rotating seat; the other end of the lower rotating rod is rotatably connected to the lower end of the main shaft through a universal coupling; the other end of the upper rotating rod is The universal coupling is movably arranged at the upper end of the main shaft in conjunction with the sliding block; the interior of the main shaft is a hollow structure and the movable shaft is arranged thereon, the lower end of the movable shaft passes through the bearing seat and the bottom end of the reactor body and is driven to rise and fall by a driving cylinder, and the movable shaft is limited by the rotation of the bearing seat, and a sliding opening for accommodating the sliding of the sliding block is longitudinally opened at the upper end of the main shaft; a lower transmission assembly is provided at the lower end of the movable shaft and is used to drive the lower rotating rod to rotate, an upper transmission assembly is provided at the upper end of the movable shaft and is used to drive the upper rotating rod to rotate, and stirring blades are provided on both the upper rotating rod and the lower rotating rod, so that the upper rotating rod and the lower rotating rod can perform self-rotation stirring while revolving and stirring; the upper transmission assembly is connected to the sliding block and drives the upper rotating rod to rise and fall on the main shaft when the movable shaft is raised and lowered, so as to realize the adjustment of the position structure of the movable stirring blade assembly.

[0008] Preferably, the upper transmission assembly includes a transmission box, a driven bevel gear 1, and a driving bevel gear 1. The side walls of the transmission box are fixedly connected to each sliding block respectively, and the interior of the sliding blocks are hollow structures and a rotating shaft is rotatably arranged through a sealed bearing. One end of the rotating shaft is connected to one end of the universal coupling, and the other end of the rotating shaft extends to the transmission box and is provided with a driven bevel gear 1. The movable shaft is longitudinally penetrated through the center of the transmission box, and the upper and lower ends of the transmission box are rotatably connected to the movable shaft through sealed bearings, and the active bevel gear 1 is arranged on the movable shaft in the transmission box, and the active bevel gear 1 is meshed with a driven bevel gear 1 respectively. When the main shaft rotates, it drives the transmission box to rotate, so that each driven bevel gear 1 rotates around the driving gear 1 and rotates on itself, so that the rotating shaft drives the upper rotating rod to rotate and stir through the universal coupling.

[0009] Preferably, the lower transmission assembly includes a driven bevel gear 2, a driving bevel gear 2, a supporting spring, and a rotating support. The rotating support is slidably sleeved on the lower end of the movable shaft, and the rotating support is rotatably arranged on the bottom end of the main shaft through a bearing; each of the driven bevel gear 2 is respectively connected to a universal coupling through a rotating shaft, and the rotating shaft horizontally penetrates the main shaft and is horizontally rotatably connected to the main shaft through a sealing shaft seat. The driving bevel gear 2 is longitudinally slidably arranged on the movable shaft, and the supporting spring is sleeved on the lower end of the movable shaft. The bottom of the supporting spring is supported on the rotating support and supports the driving bevel gear 2 upward, so that the driving bevel gear 2 is tightly meshed with each driven bevel gear 2. When the main shaft rotates, each driven bevel gear 2 rotates around the driving bevel gear 2 and rotates on its own, so that the rotating shaft drives the lower rotating rod to rotate and stir through the universal coupling.

[0010] Preferably, a guide groove is provided at the lower end of the movable shaft along its length direction, and a through opening is provided at the bottom end of the bearing seat for the movable shaft to pass through, and a guide block matched with the guide groove is provided on the inner wall of the through opening to realize the rotation limitation of the movable shaft by the bearing seat; the inner diameter of the active bevel gear 2 is larger than the diameter of the movable shaft, and a corresponding protrusion is provided on the inner wall of the active bevel gear 2 and embedded in the guide groove, so that the active bevel gear 2 can realize the rotation limitation through the cooperation between the protrusion and the guide groove.

[0011] Preferably, the articulated rotating seat includes two hinged parts distributed up and down, one ends of the two hinged parts are hinged to each other, and the other ends of the two hinged parts are provided with a sleeve, and the sleeve is rotatably connected to one end of the upper rotating rod or the lower rotating rod through a bearing.

[0012] Preferably, the stirring blades on the upper rotating rod and the lower rotating rod are staggered and distributed, and the stirring blades are all paddle-type stirring blade structures.

[0013] Preferably, a movable sealing assembly for sealing the lower end of the main shaft is provided in the middle of the inner cavity of the main shaft at the lower end of the sliding mouth, and the movable sealing assembly includes a sealing sleeve and a sealing bearing. The outer wall of the sealing sleeve is rotatably connected to the inner wall of the main shaft through at least two sealing bearings. Several layers of soft rubber rings are arranged on the inner wall of the sealing sleeve from top to bottom, and the inner sides of the soft rubber rings are in contact with the outer wall of the movable shaft.

[0014] Preferably, a liquid level sensor is installed in the reactor body and is used to detect the liquid level height. The liquid level sensor is electrically connected to an external PLC control cabinet, and the PLC control cabinet is also electrically connected to the stirring motor and the drive cylinder. The liquid level sensor can detect the liquid level height in the reactor in real time and send a signal to the PLC control cabinet. The PLC control cabinet controls the drive cylinder to drive the movable shaft to rise and fall according to the liquid level height to ensure that the material at the upper end can be fully stirred by the upper stirring rod.

[0015] Preferably, the driving cylinder is longitudinally mounted on the bottom of the reactor body through a bracket, and the piston rod of the driving cylinder is fixedly connected to the bottom end of the movable shaft.

[0016] The present invention also discloses a preparation process of an intelligent reaction device for preparing an environmentally friendly degradable fluorocarbon surfactant, which specifically comprises the following steps:

[0017] S1: Using 4-bromomethylbenzoic acid as substrate, 4-bromomethylbenzoic acid and methanol are condensed to form an ester;

[0018] S2: reacting the bromine atom on the ester with the hexafluoropropylene dimer D2 by nucleophilic substitution to connect the perfluorinated chain to generate a fluorinated ester;

[0019] S3: subjecting the fluorinated ester to saponification, hydrolysis and acidification to obtain a fluorinated carboxylic acid, and reacting the fluorinated carboxylic acid with lithium hydroxide, sodium hydroxide and potassium hydroxide, respectively, to generate lithium, sodium and potassium salt surfactants of the fluorinated carboxylic acid;

[0020] S4: Fluorocarboxylic acid is condensed with N,N-dimethylethylenediamine to form amide, and the amide reacts with iodoethane, sodium chloroacetate and diphenylbenzyl chloride to form cationic surfactant, carboxybetaine amphoteric surfactant and gemini surfactant.

[0021] The beneficial effects of the present invention are embodied in:

[0022] (1) The movable stirring blade assembly on the stirring main shaft of the present invention has an intelligent lifting and deformation function, which can dynamically adjust the position of the stirring rod and perform intelligent adaptive adjustment according to the real-time change of the liquid level in the reactor. This ensures that the materials at both ends of the reactor can obtain a uniform and efficient mixing effect, promotes efficient mixing of materials with the most optimized stirring strategy, and improves the mixing and stirring efficiency.

[0023] (2) The upper and lower rotating rods of the movable stirring blade assembly in the present invention can realize the self-rotating stirring function through the rotation of the main shaft, and by utilizing the cooperation between the upper and lower transmission components and the movable shaft, the rotating rod can still maintain a stable rotation state after the movable stirring blade assembly is raised or lowered. Compared with the traditional single-axis stirring structure, it can effectively prevent solid materials from accumulating around the main shaft, ensure that the materials are mixed more evenly and comprehensively in the reactor, and thus improve the reaction quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the movable stirring blade assembly when it descends in the present invention.

[0025] Figure 2 It is a schematic diagram of the structure of the movable stirring blade assembly when it rises in the present invention.

[0026] Figure 3 It is a cross-sectional schematic diagram of the main shaft in the present invention.

[0027] Figure 4 for Figure 3 Enlarged schematic diagram at point A in the middle.

[0028] Figure 5 for Figure 3 Enlarged schematic diagram of point B in the middle.

[0029] Figure 6 for Figure 3 Enlarged schematic diagram at point C in the middle.

[0030] Figure 7 It is a schematic diagram of the structure of the hinged rotating seat in the present invention.

[0031] Description of reference numerals: reactor body 1, bearing seat 101, through port 102, stirring motor 2, main shaft 3, sliding port 31, movable sealing assembly 32, sealing sleeve 321, soft rubber ring 322, driving cylinder 4, movable shaft 5, guide groove 51, movable stirring blade assembly 6, upper rotating rod 61, lower rotating rod 62, stirring blade 63, hinged rotating seat 7, hinged member 71, sleeve seat 72;

[0032] Upper transmission assembly 8, transmission box 81, driven bevel gear 1 82, driving bevel gear 1 83;

[0033] Lower transmission assembly 9, driven bevel gear 2 91, driving bevel gear 2 92, support spring 93, rotating support 94;

[0034] Universal coupling 10 , sliding block 11 , rotating shaft 111 . DETAILED DESCRIPTION

[0035] In order to make the technical solution of the present invention clearer, the present invention is further described below in conjunction with the accompanying drawings. Any equivalent replacement of the technical features of the technical solution of the present invention and any solution derived from conventional reasoning shall fall within the protection scope of the present invention. The fixed connection and fixed setting mentioned in the present invention are all common connection methods in the mechanical field, including welding, bolt and nut connection, and screw connection.

[0036] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0037] Please see attached Figure 1-7This embodiment provides an intelligent reaction device for preparing an environmentally friendly and degradable fluorocarbon surfactant, including a reaction kettle body 1 and an adjustable stirring device. The reaction kettle body 1 is provided with a feed inlet and a discharge outlet at the upper and lower ends thereof. The adjustable stirring device includes a stirring motor 2, a main shaft 3, a driving cylinder 4, a movable shaft 5, and a movable stirring blade 63 assembly 6. The main shaft 3 is longitudinally arranged at the center of the reactor body 1. The upper end of the main shaft 3 is driven to rotate by the stirring motor 2, and the lower end of the main shaft 3 is rotatably arranged at the bottom end of the reactor body 1 through a bearing seat 101; two symmetrically distributed movable stirring blade 63 assemblies 6 are arranged on the side wall of the main shaft 3, and the movable stirring blade 63 assemblies 6 each include an upper rotating rod 61, a lower rotating rod 62, an articulated rotating seat 7, and a universal coupling 10. One end of the upper rotating rod 61 and the lower rotating rod 62 are both rotatably connected to the articulated rotating seat 7; the other end of the lower rotating rod 62 is rotatably connected to the lower end of the main shaft 3 through the universal coupling 10; the other end of the upper rotating rod 61 is movably arranged at the upper end of the main shaft 3 through the universal coupling 10 in cooperation with the sliding block, and the upper and lower rotating rods 62 are distributed in a V shape. The coupling used in this embodiment is a cross pin universal coupling 10.

[0038] The interior of the main shaft 3 is a hollow structure and a movable shaft 5 is provided. The lower end of the movable shaft 5 passes through the bearing seat 101 and the bottom end of the reactor body 1 and is driven to rise and fall by the driving cylinder 4. The movable shaft 5 is limited by the rotation of the bearing seat 101. A sliding opening 31 for accommodating the sliding of the sliding block is longitudinally opened at the upper end of the main shaft 3; a lower transmission assembly 9 is provided at the lower end of the movable shaft 5 and is used to drive the lower rotating rod 62 to rotate; an upper transmission assembly 8 is provided at the upper end of the movable shaft 5 and is used to drive the upper rotating rod 61 to rotate, and stirring blades 63 are provided on the upper rotating rod 61 and the lower rotating rod 62, and the stirring blades 63 on the upper rotating rod 61 and the lower rotating rod 62 are staggered, and the stirring blades 63 are all paddle-type stirring blades 63 structures, so that the upper rotating rod 61 and the lower rotating rod 62 can rotate and stir by themselves under the rotation of the main shaft 3 through the cooperation of the upper and lower transmission assemblies 9 and the movable shaft 5, thereby improving the stirring and mixing effect. The upper transmission assembly is connected to the sliding block, and when the movable shaft 5 is raised or lowered, the upper rotating rod 61 is driven to rise or fall on the main shaft 3, so as to adjust the position structure of the movable stirring blade 63 assembly 6 to meet the stirring requirements of different liquid level heights, and dynamically adjust the positions of the upper and lower rotating rods so that the materials at the upper and lower ends of the reactor body 1 can be fully stirred and mixed.

[0039] In this embodiment, the articulated rotating seat 7 includes two hinged parts 71 distributed up and down, one end of the two hinged parts 71 is hinged, and the other end of the two hinged parts 71 is provided with a cylindrical sleeve 72, and the sleeve 72 is rotatably connected to one end of the upper rotating rod 61 or the lower rotating rod 62 through a bearing so that the movable angle between the upper and lower stirring rods can reach 30°~120°.

[0040] In this embodiment, the upper transmission assembly 8 includes a transmission box 81, a driven bevel gear 82, and an active bevel gear 83. The side walls of the transmission box 81 are fixedly connected to each sliding block, and the interior of the sliding block is a hollow structure and a rotating shaft 11 is rotatably arranged through a sealed bearing. One end of the rotating shaft 11 is connected to one end of the universal coupling 10, and the other end of the rotating shaft 11 extends into the transmission box 81 and is provided with a driven bevel gear 82. The movable shaft 5 is longitudinally penetrated through the center of the transmission box 81, and the upper and lower ends of the transmission box 81 are sealed. The sealed bearing is rotatably connected to the movable shaft 5. In the present application, the two sealed bearings adopt tapered roller bearings arranged opposite to each other to cope with the axial force. The movable shaft 5 is located in the transmission box 81 and an active bevel gear 83 is arranged. The two sides of the active bevel gear 83 are respectively meshed and connected with a driven bevel gear 82. When the main shaft 3 rotates, it drives the transmission box 81 to rotate, so that each driven bevel gear 82 rotates around the active gear and rotates on its own, so that the rotating shaft 11 drives the upper rotating rod 61 to rotate and stir through the universal coupling 10.

[0041] In this embodiment, the lower transmission assembly 9 includes a driven bevel gear 2 91, a driving bevel gear 2 92, a support spring 93, and a rotating support 94. The rotating support 94 is slidably sleeved on the lower end of the movable shaft 5, and the rotating support 94 is rotatably arranged on the bottom end of the main shaft 3 through a bearing; each driven bevel gear 2 91 is respectively connected to a universal coupling 10 through a rotating shaft 11, and the rotating shaft 11 horizontally penetrates the main shaft 3 and is horizontally rotatably connected to the main shaft 3 through a sealed shaft seat, and the driving bevel gear 2 92 is longitudinally slidably arranged on the movable shaft 5, and the movable shaft The supporting spring 93 is sleeved on the lower end of the main shaft 5, and the bottom of the supporting spring 93 is supported on the rotating support 94 and supports the driving bevel gear 2 92 upward, so that the driving bevel gear 2 92 is closely meshed with each driven bevel gear 2 91, so as to ensure that after the movable shaft 5 is lifted or lowered, the driving bevel gear 2 92 can always maintain a meshing state with the attached driven bevel gear 2 91, so that when the main shaft 3 rotates, each driven bevel gear 2 91 rotates around the driving bevel gear 2 and rotates on its own, so that the rotating shaft 11 drives the lower rotating rod 62 to rotate and stir through the universal coupling 10.

[0042] In this embodiment, a guide groove 51 is provided at the lower end of the movable shaft 5 along its length direction, and a through opening 102 for the movable shaft 5 to pass through is provided at the bottom end of the bearing seat 101. A guide block adapted to the guide groove 51 is provided on the inner wall of the through opening 102, so that the bearing seat 101 can limit the rotation of the movable shaft 5; the inner diameter of the active bevel gear 92 is larger than the diameter of the movable shaft 5 to ensure that the movable shaft 5 can smoothly pass through the active bevel gear 92 for lifting and lowering, and a corresponding protrusion is provided on the inner wall of the active bevel gear 92 and embedded in the guide groove 51, so that the active bevel gear 92 can achieve rotation limitation through the cooperation between the protrusion and the guide groove 51.

[0043] In this embodiment, a movable sealing assembly 32 for sealing the lower end of the main shaft 3 is provided at the lower end of the sliding opening 31 in the middle of the inner cavity of the main shaft 3 to prevent liquid from entering the lower end of the inner cavity of the main shaft 3. The movable sealing assembly 32 includes a sealing sleeve 321 and a sealing bearing. The outer wall of the sealing sleeve 321 is rotatably connected to the inner wall of the main shaft 3 through at least two sealing bearings. The two sealing bearings are tapered roller bearings. Several layers of soft rubber rings 322 are arranged from top to bottom on the inner wall of the sealing sleeve 321. The inner sides of the soft rubber rings 322 are in contact with the outer wall of the movable shaft 5. When the movable shaft 5 is raised or lowered, the soft rubber rings 322 will deform and bulge upward or downward with the movable shaft 5.

[0044] In this embodiment, the driving cylinder 4 is an electric cylinder or a hydraulic cylinder, and the driving cylinder 4 is longitudinally installed at the bottom of the reaction kettle body 1 through a bracket, and the piston rod of the driving cylinder 4 is fixedly connected to the bottom end of the movable shaft 5.

[0045] In this embodiment, a liquid level sensor and a temperature sensor are installed in the reactor body 1 and are used to detect the liquid level and temperature. A pressure sensor is connected to the upper end of the reactor to detect the internal pressure. The liquid level sensor, temperature sensor, and pressure sensor are all electrically connected to the external PLC control cabinet, and the PLC control cabinet is also electrically connected to the stirring motor 2 and the driving cylinder 4. When the liquid level rises due to the addition of other raw materials, rapid feeding, etc., or drops due to precipitation, crystallization, volatilization, etc., the liquid level sensor can detect the liquid level in the reactor in real time and send a signal to the PLC control cabinet. The PLC control cabinet controls the driving cylinder 4 to drive the movable shaft 5 to rise and fall according to the liquid level to ensure that the material at the upper end can be fully stirred by the upper stirring rod.

[0046] With real-time monitoring capability, various parameters and status information in the reactor, such as temperature, pressure, liquid level, etc., can be obtained and fed back in time to ensure the safety and stability of the reaction process. Through the realization of automated and fast-response reaction equipment, it can monitor and operate autonomously or remotely to optimize the production process, improve production efficiency and reduce production costs.

[0047] In this embodiment, a preparation process of an intelligent reaction device for preparing an environmentally friendly degradable fluorocarbon surfactant is also proposed, which specifically includes the following steps:

[0048] S1: Using 4-bromomethylbenzoic acid as substrate, 4-bromomethylbenzoic acid and methanol are condensed to form an ester;

[0049] S2: reacting the bromine atom on the ester with the hexafluoropropylene dimer D2 by nucleophilic substitution to connect the perfluorinated chain to generate a fluorinated ester;

[0050] S3: subjecting the fluorinated ester to saponification, hydrolysis and acidification to obtain a fluorinated carboxylic acid, and reacting the fluorinated carboxylic acid with lithium hydroxide, sodium hydroxide and potassium hydroxide, respectively, to generate lithium, sodium and potassium salt surfactants of the fluorinated carboxylic acid;

[0051] S4: Fluorocarboxylic acid is condensed with N,N-dimethylethylenediamine to form amide, and the amide reacts with iodoethane, sodium chloroacetate and diphenylbenzyl chloride to form cationic surfactant, carboxybetaine amphoteric surfactant and gemini surfactant.

[0052] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An intelligent reaction device for preparing an environmentally friendly degradable fluorocarbon surfactant and its preparation process, characterized in that: The invention comprises a reactor body (1) and an adjustable stirring device, wherein the adjustable stirring device comprises a stirring motor (2), a main shaft (3), a driving cylinder (4), a movable shaft (5), and a movable stirring blade (63) assembly (6); the main shaft (3) is longitudinally arranged at the center of the reactor body (1); the upper end of the main shaft (3) is driven to rotate by the stirring motor (2); the lower end of the main shaft (3) is rotatably arranged at the bottom end of the reactor body (1) through a bearing seat (101); and the side wall of the main shaft (3) is circumferentially arranged with movable stirring blades (63) and movable stirring blades (63) arranged on the side wall of the main shaft (3). At least two movable stirring blade (63) assemblies (6), the movable stirring blade (63) assembly (6) comprises an upper rotating rod (61), a lower rotating rod (62), an articulated rotating seat (7), and a universal coupling (10), one end of each of the upper rotating rod (61) and the lower rotating rod (62) is rotatably connected to the articulated rotating seat (7); the other end of the lower rotating rod (62) is rotatably connected to the lower end of the main shaft (3) through the universal coupling (10); the other end of the upper rotating rod (61) is rotatably connected to the lower end of the main shaft (3) through the universal coupling (10); The sliding block is movably arranged at the upper end of the main shaft (3); the interior of the main shaft (3) is a hollow structure and is provided with the movable shaft (5); the lower end of the movable shaft (5) penetrates the bearing seat (101) and the bottom end of the reactor body (1) and is driven to rise and fall through the driving cylinder (4); and the movable shaft (5) is rotationally limited by the bearing seat (101); a sliding opening (31) for accommodating the sliding of the sliding block is longitudinally opened at the upper end of the main shaft (3); a lower transmission assembly (9) is provided at the lower end of the movable shaft (5) and is used to drive the lower rotating rod (6 2) rotation, an upper transmission assembly (8) is provided at the upper end of the movable shaft (5) and is used to drive the upper rotating rod (61) to rotate, and stirring blades (63) are provided on both the upper rotating rod (61) and the lower rotating rod (62), so that the upper rotating rod (61) and the lower rotating rod (62) can stir by rotating while revolving; the upper transmission assembly is connected to the sliding block and drives the upper rotating rod (61) to rise and fall on the main shaft (3) when the movable shaft (5) rises and falls, so as to adjust the position structure of the movable stirring blade (63) assembly (6).

2. The intelligent reaction device for preparing an environmentally friendly degradable fluorocarbon surfactant and its preparation process as claimed in claim 1, characterized in that: The upper transmission assembly (8) comprises a transmission box (81), a driven bevel gear (82), and a driving bevel gear (83). The side walls of the transmission box (81) are respectively fixedly connected to each sliding block, and the interior of each sliding block is a hollow structure and a rotating shaft (11) is rotatably arranged through a sealed bearing. One end of the rotating shaft (11) is connected to one end of the universal coupling (10), and the other end of the rotating shaft (11) extends into the transmission box (81) and is provided with a driven bevel gear (82). The center of the transmission box (81) is longitudinally penetrated by the movable The main shaft (5) is provided with a driving bevel gear (83) disposed in the transmission box (81), and each of the driving bevel gears (83) is meshed with a driven bevel gear (82). When the main shaft (3) rotates, the transmission box (81) is driven to rotate, so that each driven bevel gear (82) rotates around the driving gear (82) and rotates on its own, so that the rotating shaft (11) drives the upper rotating rod (61) to rotate and stir through the universal coupling (10).

3. The intelligent reaction device for preparing an environmentally friendly degradable fluorocarbon surfactant and its preparation process as claimed in claim 1, characterized in that: The lower transmission assembly (9) comprises a driven bevel gear (91), a driving bevel gear (92), a support spring (93), and a rotating support (94); the rotating support (94) is slidably sleeved on the lower end of the movable shaft (5), and the rotating support (94) is rotatably arranged on the bottom end of the main shaft (3) through a bearing; each of the driven bevel gears (91) is connected to a universal joint (10) through a rotating shaft (11); the rotating shaft (11) horizontally penetrates the main shaft (3) and is horizontally rotatably connected to the main shaft (3) through a sealing shaft seat; The movable bevel gear (92) is longitudinally slidably arranged on the movable shaft (5), and the supporting spring (93) is sleeved on the lower end of the movable shaft (5). The bottom of the supporting spring (93) is supported on the rotating support (94) and supports the active bevel gear (92) upward, so that the active bevel gear (92) is tightly meshed with each driven bevel gear (91). When the main shaft (3) rotates, each driven bevel gear (91) rotates around the active bevel gear (92) and rotates on its own, so that the rotating shaft (11) drives the lower rotating rod (62) to rotate and stir through the universal joint (10).

4. The intelligent reaction device for preparing an environmentally friendly degradable fluorocarbon surfactant and its preparation process as claimed in claim 3, characterized in that: The lower end of the movable shaft (5) is provided with a guide groove (51) along its length direction; the bottom end of the bearing seat (101) is provided with a through hole (102) for the movable shaft (5) to pass through; the inner wall of the through hole (102) is provided with a guide block matched with the guide groove (51) to achieve rotational positioning of the movable shaft (5) by the bearing seat (101); the inner diameter of the active bevel gear (92) is larger than the diameter of the movable shaft (5); a corresponding convex block is provided on the inner wall of the active bevel gear (92) and is embedded in the guide groove (51) to achieve rotational positioning of the active bevel gear (92) through the cooperation of the convex block and the guide groove (51).

5. The intelligent reaction device for preparing an environmentally friendly degradable fluorocarbon surfactant and its preparation process as claimed in claim 1, characterized in that: The hinged rotating seat (7) comprises two hinged parts (71) distributed up and down, one end of the two hinged parts (71) is hinged, and the other end of the two hinged parts (71) is provided with a sleeve seat (72), and the sleeve seat (72) is rotatably connected to one end of the upper rotating rod (61) or the lower rotating rod (62) through a bearing.

6. The intelligent reaction device for preparing an environmentally friendly degradable fluorocarbon surfactant and its preparation process as claimed in claim 5, characterized in that: The stirring blades (63) on the upper rotating rod (61) and the lower rotating rod (62) are staggered and distributed, and the stirring blades (63) are all paddle-type stirring blades (63) structures.

7. The intelligent reaction device for preparing an environmentally friendly and degradable fluorocarbon surfactant and its preparation process as claimed in claim 1, characterized in that: A movable sealing assembly (32) for sealing the lower end of the main shaft (3) is provided in the middle of the inner cavity of the main shaft (3) and located at the lower end of the sliding opening (31). The movable sealing assembly (32) comprises a sealing sleeve (321) and a sealing bearing. The outer wall of the sealing sleeve (321) is rotatably connected to the inner wall of the main shaft (3) via at least two sealing bearings. A plurality of layers of soft rubber rings (322) are arranged from top to bottom on the inner wall of the sealing sleeve (321). The inner sides of the soft rubber rings (322) are in contact with the outer wall of the movable shaft (5).

8. The intelligent reaction device for preparing an environmentally friendly and degradable fluorocarbon surfactant and its preparation process as claimed in claim 1, characterized in that: A liquid level sensor is installed in the reactor body (1) and is used to detect the liquid level height. The liquid level sensor is electrically connected to an external PLC control cabinet, and the PLC control cabinet is also electrically connected to the stirring motor (2) and the driving cylinder (4).

9. The intelligent reaction device for preparing an environmentally friendly degradable fluorocarbon surfactant and its preparation process as claimed in claim 8, characterized in that: The driving cylinder (4) is longitudinally mounted on the bottom of the reaction kettle body (1) via a bracket, and the piston rod of the driving cylinder (4) is fixedly connected to the bottom end of the movable shaft (5).

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