A fluoroethylene carbonate synthesis device

Abstract

The invention relates to the field of chemical synthesis devices, in particular to a fluoroethylene carbonate synthesis device, comprising an upper cover, which is sealed and fixedly connected to a lower cover; a pressure regulating mechanism is installed in the upper cover, the pressure regulating mechanism comprises an upper pressure cylinder and a lower pressure cylinder, and the upper pressure cylinder is sealed and arranged in the lower pressure cylinder; a stirring mechanism is installed in the upper pressure cylinder and the lower pressure cylinder; the invention controls the up and down displacement of the upper pressure cylinder through the pressure regulating mechanism, thereby adjusting the pressure in a reaction chamber in real time to ensure the optimal pressure condition in the reaction chamber; the stirring mechanism is used to achieve full stirring and mixing of materials in the reaction chamber, thereby accelerating the reaction speed; the invention can accelerate the reaction synthesis speed through the above-mentioned method, thereby improving the production efficiency.

Description

Technical Field

[0001] The invention relates to the field of chemical synthesis devices, in particular to a fluoroethylene carbonate synthesis device. Background Art

[0002] Fluoroethylene carbonate (FEC), also known as 4-fluoro-1,3-dioxolane-2-one, has a molecular formula of C3H3FO3. It is a chemical substance and the main electrolyte additive for lithium-ion batteries. It has better performance in forming SEI film, forming a tight structure layer without increasing impedance, preventing further decomposition of the electrolyte, and improving the low-temperature performance of the electrolyte.

[0003] In the preparation process of fluoroethylene carbonate, raw materials such as ethylene and hydrogen fluoride and metal catalysts such as oxides, chlorides or acid catalysts need to be prepared; in the reaction control stage, key parameters include reaction temperature (usually between 150-300 degrees Celsius) and reaction pressure (usually between 0.1-1 MPa), and the reaction time generally takes several hours to tens of hours; finally, in the product separation stage, commonly used separation methods include distillation, crystallization and extraction.

[0004] Since parameters need to be controlled during the reaction of fluoroethylene carbonate, especially pressure parameters are difficult to control, the traditional method is to control the reaction pressure by the pressure of inert gas or reaction gas. This method increases consumables and increases production costs. In addition, the reactor is generally mixed with various catalysts, liquid reactants, gaseous reactants, solid crystals and other mixtures. The stirring paddles in the traditional reactor are difficult to meet the demand for uniform stirring, which affects the reaction efficiency. Moreover, due to the different forms of the reactants, the reactants cannot fully contact and react after adding, further slowing down the reaction speed. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a fluoroethylene carbonate synthesis device, which solves the problem of slow synthesis reaction speed of fluoroethylene carbonate by reasonably controlling the pressure of the reaction container and a more uniform stirring method; in addition, the addition of raw materials is achieved by adding them in equal proportions and fully mixing, thereby improving the problem of high production cost caused by insufficient reaction; the specific implementation method is as follows:

[0006] A fluoroethylene carbonate synthesis device comprises an upper cover which is sealed and fixedly connected to a lower cover.

[0007] A pressure regulating mechanism is installed in the upper cover, and the pressure regulating mechanism includes an upper pressure cylinder and a lower pressure cylinder. The upper pressure cylinder is installed on the upper cover, the upper pressure cylinder is sealed and configured in the lower pressure cylinder and moves along it, and the lower pressure cylinder is fixed to the lower cover.

[0008] A transmission part is installed in the upper pressure cylinder, and a stirring part is installed in the lower pressure cylinder. The stirring part includes a mounting cylinder and a stirring plate. The mounting cylinder is rotatably installed in the lower pressure cylinder, and the stirring plate is rotatably installed on the side wall of the mounting cylinder. The transmission part is drivingly connected to the mounting cylinder and the stirring plate respectively.

[0009] Preferably, a feed part is installed on the outer side of the lower cover, and the feed part includes a second motor, an output end of the second motor is drive-connected to the piston, and the piston is seal-configured in the feed box.

[0010] A mixing part is installed below the feed box, and the mixing part includes a mixing paddle and a mixing cylinder, and the mixing cylinder is connected with the feed box and the pressing cylinder.

[0011] The output end of the second motor is drivingly connected to the mixing paddle, and the mixing paddle is rotatably installed in the mixing barrel.

[0012] Preferably, the voltage regulating mechanism further comprises an electric cylinder, the interior of the upper cover is hinged to the first ends of a plurality of electric cylinders, and the output end of the electric cylinder is hinged to the upper pressure cylinder.

[0013] The bottom of the lower pressure cylinder is fixed to the discharge hole, and a valve is installed on the discharge hole.

[0014] Preferably, the transmission part includes a first motor, the first motor is fixed to the upper pressure cylinder, the output end of the first motor is coaxially fixed to a first gear, the first gear is meshed with a plurality of second gears, the second gears are rotatably mounted on a mounting sleeve, and the mounting sleeve is fixed to the upper pressure cylinder.

[0015] The second gear is meshed with an inner gear ring, the inner gear ring is rotatably mounted on the mounting sleeve, the inner gear ring is fixedly connected to a plurality of driving rods, and the driving rods are drivingly connected to the mounting cylinder.

[0016] The first gear is coaxially fixed with the driving shaft, and the driving shaft is drivingly connected with the stirring plate.

[0017] Preferably, a plurality of the driving rods are arranged in a one-to-one correspondence in the rod sleeves, and a plurality of the rod sleeves are fixed to the mounting tube, a shaft sleeve is rotatably mounted on the mounting tube, and the driving shaft is arranged in the shaft sleeve.

[0018] The shaft sleeve is fixed to the first bevel gear, the first bevel gear is meshed with a plurality of second bevel gears, and the second bevel gear is fixed to the stirring plate.

[0019] Preferably, the output end of the second motor is coaxially fixed to the threaded rod, the threaded rod is threadedly connected to the piston rod, and the piston rod is fixed to the piston.

[0020] Preferably, the piston rod is fixedly connected to a connecting rod, the connecting rod passes through a through hole, and the through hole is provided on the lower cover.

[0021] The connecting rod is fixed to a synchronous belt, the synchronous belt is meshed with a first synchronous wheel and a second synchronous wheel respectively, the first synchronous wheel and the second synchronous wheel are mounted on the lower cover, the second synchronous wheel is coaxially fixed to the mixing paddle, and a feed port is provided on the mixing barrel.

[0022] Preferably, the feed box is connected to the mixing part through a one-way pipe valve, the one-way pipe valve includes a first pipe, the feed box is fixed to the first pipe, the first pipe is fixed to the second pipe, and the second pipe is fixed to the mixing barrel.

[0023] A mounting ring is installed in the second pipeline, the mounting ring is fixed to a return spring, the return spring is fixed to a cut-off ball, and the cut-off ball is sealingly overlapped with the first pipeline.

[0024] Preferably, a thermometer and a pressure sensor are installed on the outer side of the lower cover, and the sensing ends of the thermometer and the pressure sensor are arranged in the lower pressure cylinder through the gap between the lower cover and the lower pressure cylinder.

[0025] Preferably, the structure consisting of the piston rod, the piston and the feed box is fixed in several groups on the outer side of the lower cover.

[0026] After adopting the above technical solution, the beneficial effects of the present invention are:

[0027] 1. The upper and lower reaction barrels are separated, and the movement of the upper reaction barrel is controlled to control the pressure in the reaction chamber in real time, ensuring that the pressure in the reaction chamber is always maintained within the optimal range, thereby accelerating the reaction speed and reducing the reaction time.

[0028] 2. The direction of the stirring paddle changes at any time during the stirring process, thereby changing the stirring rate and stirring direction of the various raw materials in the reaction chamber at all times, thereby creating more turbulence, making the mixing of various raw materials more uniform, thereby improving the reaction efficiency.

[0029] 3. The method of adding materials in equal proportions is adopted, combined with the mixing of materials during material addition. On the one hand, the appropriate ratio can achieve full reaction of materials with maximum efficiency and reduce material waste. On the other hand, sufficient material mixing reduces the time of material mixing in the reaction chamber, thereby accelerating the reaction speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 It is a front view of a fluoroethylene carbonate synthesis device;

[0032] Figure 2 is a front cross-sectional view of a fluoroethylene carbonate synthesis device;

[0033] Figure 3 It is a schematic diagram of the cross-section structure of the stirring mechanism;

[0034] Figure 4 It is an enlarged cutaway schematic diagram of the transmission part;

[0035] Figure 5 It is an enlarged cross-sectional schematic diagram of the stirring part;

[0036] Figure 6 It is a structural schematic diagram of the feeding part;

[0037] Figure 7 It is a structural schematic diagram of the mixing unit;

[0038] Figure 8 It is a structural schematic diagram of a one-way pipe valve.

[0039] Description of reference numerals:

[0040] 101-upper cover, 102-lower cover, 103-thermometer, 104-pressure sensor, 105-mounting frame;

[0041] 200-pressure regulating mechanism, 201-guide through hole, 202-guide tube, 203-electric cylinder, 204-upper pressure cylinder, 205-lower pressure cylinder, 206-discharging hole, 207-valve;

[0042] 300-stirring mechanism, 310-transmission part, 311-first motor, 312-first gear, 313-second gear, 314-installation shaft, 315-installation sleeve, 316-inner gear ring, 317-turntable, 318-driving rod, 319-driving shaft;

[0043] 320-stirring part, 321-rod sleeve, 322-mounting cylinder, 323-shaft sleeve, 324-first bevel gear, 325-second bevel gear, 326-stirring plate;

[0044] 400-feeding mechanism, 410-feeding part, 411-second motor, 412-threaded rod, 413-piston rod, 414-piston, 415-feeding box;

[0045] 420-mixing part, 421-connecting rod, 422-through hole, 423-synchronous belt, 424-first synchronous wheel, 425-second synchronous wheel, 426-mixing paddle, 427-mixing barrel, 428-feeding port;

[0046] 430 - one-way pipe valve, 431 - first pipe, 432 - second pipe, 433 - mounting ring, 434 - return spring, 435 - intercepting ball. DETAILED DESCRIPTION

[0047] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present invention and are not configured to limit the present invention. For those skilled in the art, the present invention can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by illustrating examples of the present invention.

[0048] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the present invention. In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection or an integral connection; it can be directly connected or indirectly connected. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0049] The embodiment of the present invention provides a fluoroethylene carbonate synthesis device, see Figure 1 , 2 3. The synthesis device includes an upper cover 101, and a first flange is fixedly installed on the bottom of the upper cover 101. The first flange is fixedly and sealedly connected to the second flange by fastening bolts, and the second flange is fixedly connected to the top of the lower cover 102.

[0050] A pressure regulating mechanism 200 is installed inside the upper cover 101, and the pressure regulating mechanism 200 includes an upper pressure cylinder 204 and a lower pressure cylinder 205. The top of the upper pressure cylinder 204 is installed on the top of the inner surface of the upper cover 101, and the lower end of the upper pressure cylinder 204 is always sealed in the top end of the lower pressure cylinder 205 and can move up and down along the height direction. The lower pressure cylinder 205 is fixedly connected to the inner wall of the lower cover 102, and there is a uniformly distributed annular gap between the outer surface formed by the upper pressure cylinder 204 and the lower pressure cylinder 205 and the inner surface formed by the upper cover 101 and the lower cover 102.

[0051] The pressure regulating mechanism 200 drives the upper pressure cylinder 204 to move up and down, thereby realizing the adjustment of the internal volume of the upper pressure cylinder 204 and the lower pressure cylinder 205. When the reaction pressure needs to be increased, the upper pressure cylinder 204 moves downward, and when the reaction pressure needs to be reduced, the upper pressure cylinder 204 moves upward. In this way, the reaction pressure can be adjusted in real time, thereby ensuring a faster reaction speed.

[0052] Among them, the lower end of the upper pressure cylinder 204 is always sealed in the lower pressure cylinder 205 through a plurality of sealing rings, the outer surface of the lower end of the upper pressure cylinder 204 is coaxially fixed with the plurality of sealing rings, and the sealing rings are sealed and overlapped with the inner surface of the lower pressure cylinder 205.

[0053] A plurality of mounting frames 105 are evenly and fixedly mounted on the outer side surface of the lower cover 102 along its circumference, and the mounting frames 105 are used for mounting the device.

[0054] Among them, a thermometer 103 and a pressure sensor 104 are respectively installed on the outer side of the lower cover 102. The sensing ends of the thermometer 103 and the pressure sensor 104 pass through the gap between the lower cover 102 and the lower pressure cylinder 205 and are arranged in the lower pressure cylinder 205 for real-time monitoring of the reaction temperature and reaction pressure.

[0055] A stirring mechanism 300 is installed in the reaction space formed by the upper pressure cylinder 204 and the lower pressure cylinder 205. A transmission part 310 is installed on the top of the upper pressure cylinder 204, and a stirring part 320 is installed on the bottom of the transmission part 310. The stirring part 320 includes a mounting cylinder 322 and a stirring plate 326. The mounting cylinder 322 is rotatably installed in the lower pressure cylinder 205, and a plurality of stirring plates 326 are uniformly installed on the side wall of the mounting cylinder 322 along its circumferential direction. During the reaction process, the transmission part 310 drives the mounting cylinder 322 and the stirring plate 326 to rotate around the axis of the mounting cylinder 322, and at the same time, the stirring plate 326 also rotates.

[0056] See also Figure 2 The pressure regulating mechanism 200 also includes a guide through hole 201, a guide tube 202, an electric cylinder 203, a discharge hole 206, and a valve 207.

[0057] The top of the upper cover 101 is coaxially fixedly connected with a guide through hole 201, and a guide tube 202 is arranged inside the guide through hole 201 to move along the guide through hole. The bottom of the guide tube 202 is fixedly connected to the top of the upper pressure cylinder 204, and a plurality of observation holes are opened on the side of the guide tube 202.

[0058] The configuration relationship between the guide through hole 201 and the guide tube 202 further guides the up and down movement of the upper pressure cylinder 204. In addition, observation holes are provided on the side and bottom of the guide tube 202 to facilitate observation and monitoring of the working status of the electric cylinder 203.

[0059] The top of the inner surface of the upper cover 101 is hingedly connected to the first ends of a plurality of electric cylinders 203 along its circumference, and the output end of the electric cylinder 203 is hingedly connected to the top of the outer surface of the upper pressure cylinder 204 .

[0060] The bottom of the lower pressing cylinder 205 is fixedly connected to and communicated with the first end of the discharge hole 206 , and a valve 207 is fixedly installed on the second end of the discharge hole 206 via a flange.

[0061] The reaction products inside the upper pressure cylinder 204 and the lower pressure cylinder 205 can be discharged outward through the valve 207. During the up and down movement of the upper pressure cylinder 204, the configuration relationship between the guide tube 202 and the guide through hole 201, as well as the configuration relationship between the upper pressure cylinder 204 and the lower pressure cylinder 205 are jointly guided, and several electric cylinders 203 contract or extend at the same time, thereby controlling the upward or downward movement of the upper pressure cylinder 204.

[0062] Among them, the power module of the electric cylinder 203 includes a battery, an electronic control module and a wireless communication module. The battery is installed inside the electric cylinder 203, and the wireless communication module is wirelessly connected to the user terminal, so that the user can directly control the contraction or extension of the electric cylinder 203 through the wireless communication module, thereby realizing the control of the up and down movement of the upper pressure cylinder 204.

[0063] See also Figure 2 , 3 4. The transmission part 310 includes a first motor 311, a first gear 312, a second gear 313, a mounting shaft 314, a mounting sleeve 315, an inner gear ring 316, a rotating disk 317, a driving rod 318, and a driving shaft 319.

[0064] The upper pressure cylinder 204 is fixedly connected to the first motor 311, the output end of the first motor 311 is coaxially fixed to the first gear 312, the first gear 312 is simultaneously meshed with a plurality of second gears 313, the second gear 313 is coaxially fixed to the mounting shaft 314, the plurality of mounting shafts 314 are rotatably mounted on the mounting sleeve 315, and the mounting sleeve 315 is coaxially fixedly connected to the upper pressure cylinder 204.

[0065] A plurality of second gears 313 are meshed with the inner gear ring 316 on one side away from the first gear 312. The inner gear ring 316 is coaxially arranged with the first gear 312. The inner gear ring 316 is rotatably mounted on the mounting sleeve 315. A turntable 317 is coaxially fixed to the bottom of the inner gear ring 316. The bottom of the turntable 317 is evenly fixedly connected to the first ends of a plurality of driving rods 318 along the circumferential direction. The driving rods 318 are drivingly connected to the mounting cylinder 322.

[0066] The bottom end of the first gear 312 is coaxially fixed to the first end of the driving shaft 319 . The driving shaft 319 sealably passes through the inner gear ring 316 and is drivingly connected to the stirring plate 326 .

[0067] See also Figure 3 , 5 The stirring part 320 further includes a rod sleeve 321 , a shaft sleeve 323 , a first bevel gear 324 , and a second bevel gear 325 .

[0068] The second ends of the plurality of driving rods 318 are respectively arranged in the rod sleeves 321 and move along them. The plurality of rod sleeves 321 are fixedly connected to the outer surface of the mounting tube 322. The mounting tube 322 is coaxially rotatably mounted with a shaft sleeve 323, and the shaft sleeve 323 is arranged with the second end of the driving shaft 319 moving along it.

[0069] The outer surface of the shaft sleeve 323 is coaxially fixed with the first bevel gear 324 . The first bevel gear 324 is meshed with a plurality of second bevel gears 325 at the same time. The support shaft seal of the second bevel gear 325 passes through the side wall of the mounting cylinder 322 and is fixedly connected to the stirring plate 326 .

[0070] When the synthesis reaction starts in the upper pressure cylinder 204 and the lower pressure cylinder 205, the first motor 311 is started, and the output end of the first motor 311 drives the first gear 312 to rotate. The meshing relationship between the first gear 312 and the second gear 313 causes the second gear 313 to rotate synchronously. Since the second gear 313 is rotatably mounted on the mounting sleeve 315 via the mounting shaft 314, the relative position of the second gear 313 remains unchanged. At this time, the simultaneous rotation of several second gears 313 further drives the rotation of the inner ring 316, and the rotation direction of the inner ring 316 is opposite to that of the first gear 312.

[0071] Since the inner gear ring 316, the turntable 317, and the driving rod 318 are fixedly connected, the reverse rotation of the inner gear ring 316 will drive the mounting tube 322 through the configuration relationship between the driving rod 318 and the rod sleeve 321, and the reverse rotation of the mounting tube 322 will further drive the synchronous rotation of the stirring plate 326. This process adjusts the position of the stirring plate 326, so that the mounting tube 322 drives the stirring plate 326 to stir the reactants during the rotation process.

[0072] In addition, the fixed connection between the first gear 312 and the drive shaft 319 synchronously drives the forward rotation of the drive shaft 319, and further drives the synchronous forward rotation of the sleeve 323 through the configuration relationship between the drive shaft 319 and the sleeve 323. The sleeve 323 drives the second bevel gear 325 and the stirring plate 326 to rotate around the axis of the second bevel gear 325 through the meshing relationship between the first bevel gear 324 and the second bevel gear 325. This process further adjusts the stirring direction of the stirring plate 326. Through this stirring method, the uncertainty of the flow direction and flow speed of the raw materials in the reaction space is increased, the turbulence between the raw materials is increased, and it is easier to homogenize, thereby reducing the reaction time.

[0073] Among them, the cross-sectional shape of the driving shaft 319 is a square, and the cross-sectional shape of the inner surface of the sleeve 323 is a square that matches the cross-sectional shape of the driving shaft 319. The purpose of this structure is that during the reaction process, when the upper pressure cylinder 204 moves up and down, the driving shaft 319 can always drive the sleeve 323 to rotate.

[0074] Among them, the structure composed of the first bevel gear 324, the second bevel gear 325, and the stirring plate 326 is distributed in multiple groups along the axial direction of the mounting cylinder 322. Its purpose is to fully stir and mix the reactants at different height directions inside the upper pressure cylinder 204 and the lower pressure cylinder 205 to accelerate the reaction.

[0075] As a further embodiment of the present invention, see Figure 2 , 6 7. The fluoroethylene carbonate synthesis device also includes a feeding mechanism 400. A feeding portion 410 is installed on the outer surface of the lower cover 102. The feeding portion 410 includes a second motor 411. The output end of the second motor 411 is drivingly connected to a piston 414. The piston 414 is sealed and arranged in a feeding box 415 and moves along it. A mixing portion 420 is installed at the bottom end of the feeding box 415. The mixing portion 420 includes a mixing paddle 426 and a mixing barrel 427. The first end of the mixing barrel 427 is connected to the feeding box 415, and the second end of the mixing barrel 427 is connected to the inside of the lower pressure barrel 205. The output end of the second motor 411 is drivingly connected to the mixing paddle 426. The mixing paddle 426 is arranged in the mixing barrel 427 and rotates along it.

[0076] See also Figure 6 , 7 The feed part 410 also includes a threaded rod 412 and a piston rod 413. The output end of the second motor 411 is coaxially fixed with the first end of the threaded rod 412. The threaded rod 412 is threadedly connected to the piston rod 413. The piston rod 413 is sealed and passes through the top of the feed box 415 and is fixedly connected to the piston 414.

[0077] The output end of the second motor 411 drives the threaded rod 412 to rotate, and through the threaded connection between the threaded rod 412 and the piston rod 413, it drives the plurality of pistons 414 to move downward, thereby pushing the reactants in the plurality of feed boxes 415 into the mixing cylinder 427 under pressure, and transporting them into the lower pressure cylinder 205 through the mixing cylinder 427.

[0078] Among them, a structure composed of a piston rod 413, a piston 414, and a feed box 415 is continuously distributed along the circumference of the lower cover 102, and several piston rods 413 are fixedly connected, so as to realize the synchronous addition of raw materials and catalysts.

[0079] The number of the above structures is determined according to the amount of raw materials and catalysts added, and those skilled in the art can adjust the volume of each feed box 415 according to the ratio of the added raw materials to meet the reaction requirements.

[0080] like Figure 6 , 7 As shown in FIG. 8 , the bottom of the feed box 415 is connected to the mixing section 420 via a one-way pipe valve 430. The one-way pipe valve 430 includes a first pipe 431, a second pipe 432, a mounting ring 433, a return spring 434, and a shut-off ball 435. The feed box 415 is fixedly connected and connected to the first end of the first pipe 431, the second end of the first pipe 431 is fixedly connected and connected to the first end of the second pipe 432, and the second end of the second pipe 432 is fixedly connected and connected to the mixing barrel 427.

[0081] The inner surface of the second pipe 432 away from the side of the first pipe 431 is coaxially fixed with the mounting ring 433, the mounting ring 433 is fixedly connected to one end of the return spring 434, the other end of the return spring 434 is fixedly connected to the intercepting ball 435, and the outer surface of the intercepting ball 435 can be sealed and overlapped with the second end of the first pipe 431.

[0082] In addition, a one-way pipe valve 430 is installed on the side of each feed box 415 , and the side of the feed box 415 is fixedly connected and communicated with the second end of the second pipe 432 in the one-way pipe valve 430 .

[0083] When the piston 414 moves downward, the raw materials in the feed box 415 enter the mixing barrel 427 through the one-way pipe valve 430. When the piston 414 moves upward, 415 is fed through the one-way pipe valve 430 installed on its side, thereby replenishing the raw materials in the feed box 415.

[0084] Among them, the diameter of the first pipe 431 is smaller than the diameter of the intercepting ball 435, the diameter of the intercepting ball 435 is smaller than the diameter of the second pipe 432, and the return spring 434 is always in a compressed state. When raw materials are added, the raw materials push the intercepting ball 435 from the first pipe 431 and enter the second pipe 432. When it is not necessary to add materials, the elastic force of the return spring 434 pushes the intercepting ball 435 to seal and overlap with the second end of the first pipe 431, so that the material in the second pipe 432 will not flow back.

[0085] The mixing section 420 also includes a connecting rod 421, a through hole 422, a synchronous belt 423, a first synchronous wheel 424, a second synchronous wheel 425, and a feed port 428. The piston rod 413 is fixedly connected to the first end of the connecting rod 421, and the second end of the connecting rod 421 passes through the through hole 422 and is arranged in the gap between the lower cover 102 and the lower pressure cylinder 205. The through hole 422 is opened on the lower cover 102.

[0086] The other end of the connecting rod 421 is fixedly connected to the side of the synchronous belt 423, a first synchronous wheel 424 is installed on the upper side of the synchronous belt 423, and a second synchronous wheel 425 is installed on the lower side of the synchronous belt 423, the first synchronous wheel 424 and the second synchronous wheel 425 are respectively rotatably installed on the side wall of the lower cover 102 through a support shaft, the axis of the first synchronous wheel 424 and the axis of the second synchronous wheel 425 are aligned up and down, and the first synchronous wheel 424 and the second synchronous wheel 425 tension the synchronous belt 423, the support shaft of the second synchronous wheel 425 seals and passes through the first end of the mixing barrel 427 and is coaxially fixed with the first end of the mixing paddle 426, the second end of the mixing barrel 427 passes through the side wall of the lower pressing barrel 205 and is fixedly connected to the side wall of the lower pressing barrel 205, and a feed port 428 is provided at the bottom of the second end of the mixing barrel 427, and the feed port 428 connects the mixing barrel 427 with the lower pressing barrel 205.

[0087] When the second motor 411 drives the piston rod 413 to move up and down through the threaded rod 412, the piston rod 413 drives the connecting rod 421 to move up and down synchronously, and the connecting rod 421 further drives the second synchronous wheel 425 and its supporting shaft to rotate through the synchronous belt 423, thereby finally realizing the rotation of the mixing paddle 426 inside the mixing barrel 427. Therefore, before the various reaction materials enter the lower pressure barrel 205, they will be preliminarily mixed and stirred in the mixing barrel 427 to make them present a uniformly doped state, thereby increasing the contact area between the reactants, thereby providing the prerequisite for the reactants to enter the reaction space and react quickly under suitable temperature, pressure and catalyst, and further reducing the reaction time.

[0088] According to the embodiments of the present invention as described above, these embodiments do not describe all the details in detail, nor do they limit the invention to specific embodiments. Obviously, many modifications and changes can be made based on the above description. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can make good use of the present invention and the modified use based on the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fluoroethylene carbonate synthesis device, comprising an upper cover (101), characterized in that: The upper cover (101) and the lower cover (102) are sealed and fixedly connected; A pressure regulating mechanism (200) is installed in the upper cover (101), and the pressure regulating mechanism (200) comprises an upper pressure cylinder (204) and a lower pressure cylinder (205). The upper pressure cylinder (204) is installed on the upper cover (101), and the upper pressure cylinder (204) is sealed and arranged in the lower pressure cylinder (205) and moves along the lower pressure cylinder (205). The lower pressure cylinder (205) is fixed to the lower cover (102); A transmission part (310) is installed in the upper pressure cylinder (204), and a stirring part (320) is installed in the lower pressure cylinder (205). The stirring part (320) includes a mounting cylinder (322) and a stirring plate (326). The mounting cylinder (322) is rotatably mounted in the lower pressure cylinder (205), and the stirring plate (326) is rotatably mounted on the side wall of the mounting cylinder (322). The transmission part (310) is drivingly connected to the mounting cylinder (322) and the stirring plate (326) respectively.

2. The fluoroethylene carbonate synthesis device according to claim 1, characterized in that: A feeding portion (410) is installed on the outer side of the lower cover (102), the feeding portion (410) comprising a second motor (411), an output end of the second motor (411) being drivingly connected to a piston (414), and the piston (414) is sealed and disposed in a feeding box (415); A mixing section (420) is installed below the feed box (415), the mixing section (420) comprising a mixing paddle (426) and a mixing cylinder (427), the mixing cylinder (427) being in communication with the feed box (415) and the pressing cylinder (205); The output end of the second motor (411) is drivingly connected to the mixing paddle (426), and the mixing paddle (426) is rotatably mounted in the mixing barrel (427).

3. The fluoroethylene carbonate synthesis device according to claim 1, characterized in that: The pressure regulating mechanism (200) further comprises an electric cylinder (203), the interior of the upper cover (101) is hinged to the first ends of a plurality of electric cylinders (203), and the output end of the electric cylinder (203) is hinged to the upper pressure cylinder (204); The bottom of the lower pressing cylinder (205) is fixed to the discharge hole (206), and a valve (207) is installed on the discharge hole (206).

4. The fluoroethylene carbonate synthesis device according to claim 1, characterized in that: The transmission part (310) comprises a first motor (311), the first motor (311) is fixed to the upper pressure cylinder (204), the output end of the first motor (311) is coaxially fixed to a first gear (312), the first gear (312) is meshed with a plurality of second gears (313), the second gears (313) are rotatably mounted on a mounting sleeve (315), and the mounting sleeve (315) is fixed to the upper pressure cylinder (204); The second gear (313) is meshed with an inner gear ring (316), the inner gear ring (316) is rotatably mounted on the mounting sleeve (315), the inner gear ring (316) is fixedly connected to a plurality of drive rods (318), and the drive rods (318) are drivingly connected to the mounting cylinder (322); The first gear (312) is coaxially fixed with the driving shaft (319), and the driving shaft (319) is drivingly connected to the stirring plate (326).

5. The fluoroethylene carbonate synthesis device according to claim 4, characterized in that: A plurality of the driving rods (318) are arranged in a one-to-one correspondence in the rod sleeves (321); the plurality of the rod sleeves (321) are fixed to the mounting cylinder (322); a shaft sleeve (323) is rotatably mounted on the mounting cylinder (322); and the driving shaft (319) is arranged in the shaft sleeve (323); The shaft sleeve (323) is fixed to the first bevel gear (324), the first bevel gear (324) is meshed with a plurality of second bevel gears (325), and the second bevel gear (325) is fixed to the stirring plate (326).

6. The fluoroethylene carbonate synthesis device according to claim 2, characterized in that: The output end of the second motor (411) is coaxially fixed to the threaded rod (412), the threaded rod (412) is threadedly connected to the piston rod (413), and the piston rod (413) is fixed to the piston (414).

7. The fluoroethylene carbonate synthesis device according to claim 6, characterized in that: The piston rod (413) is fixedly connected to the connecting rod (421); the connecting rod (421) passes through a through hole (422); and the through hole (422) is provided on the lower cover (102); The connecting rod (421) is fixed to a synchronous belt (423), the synchronous belt (423) is respectively meshed with a first synchronous wheel (424) and a second synchronous wheel (425), the first synchronous wheel (424) and the second synchronous wheel (425) are mounted on the lower cover (102), the second synchronous wheel (425) is coaxially fixed to the mixing paddle (426), and a feeding port (428) is provided on the mixing barrel (427).

8. The fluoroethylene carbonate synthesis device according to claim 2, characterized in that: The feed box (415) is connected to the mixing section (420) via a one-way pipe valve (430), the one-way pipe valve (430) comprises a first pipe (431), the feed box (415) is fixed to the first pipe (431), the first pipe (431) is fixed to a second pipe (432), and the second pipe (432) is fixed to the mixing barrel (427); A mounting ring (433) is installed in the second pipe (432); the mounting ring (433) is fixed to a return spring (434); the return spring (434) is fixed to a cut-off ball (435); and the cut-off ball (435) is overlapped in a sealing manner with the first pipe (431).

9. The fluoroethylene carbonate synthesis device according to any one of claims 1 to 8, characterized in that: A thermometer (103) and a pressure sensor (104) are installed on the outer side of the lower cover (102), and the sensing ends of the thermometer (103) and the pressure sensor (104) pass through the gap between the lower cover (102) and the lower pressure cylinder (205) and are arranged in the lower pressure cylinder (205).

10. The fluoroethylene carbonate synthesis device according to claim 7, characterized in that: The structure consisting of the piston rod (413), the piston (414), and the feed box (415) is fixed in several groups on the outside of the lower cover (102).

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