A dryer for use in a fluoroethylene carbonate production process

Abstract

The present application relates to the technical field of fluoroethylene carbonate production, and particularly relates to a dryer used in the production process of fluoroethylene carbonate. The dryer comprises a support frame, a processing cylinder fixed to the support frame, two first trays and two second trays fixed in the processing cylinder, a discharging shell fixed to and communicated with the processing cylinder, a fixed shell rotatably connected in the processing cylinder, four circles of cloth rakes fixed to the fixed shell, a first compression roller rotatably connected to the fixed shell in a circumferential distribution, a plurality of circles of first compression blocks fixed to the first compression roller in an array distribution, a fixed shaft fixed to the processing cylinder, and a first auxiliary drying mechanism provided on the fixed shell. The initial material is extruded by the first compression roller, the material is flattened, the material is fully contacted with the first tray, the drying efficiency is improved, the material is extruded by the first compression blocks, the distribution state of the material is changed, and the material is uniformly heated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fluorinated ethylene carbonate production, and particularly relates to a dryer used in fluorinated ethylene carbonate production. BACKGROUND

[0002] Fluorinated ethylene carbonate is a very important chemical, mainly used as an additive for lithium battery electrolyte. It can significantly improve the performance, life and safety of lithium batteries (especially high-performance lithium batteries). In the production process of fluorinated ethylene carbonate, various by-product salts (such as KCl) are produced, which have economic value and can be recycled and sold. In order to facilitate transportation, storage and prevent caking, it needs to be dried into uniform solid particles.

[0003] At present, the above-mentioned by-product salt is mainly dried by a disc dryer. The inside of the disc dryer mainly consists of a plurality of heating discs and a plurality of cloth rakes of different heights. The cloth rake is mainly responsible for pushing the material and simply guiding it, so that the material moves along the heating disc. However, this method can only change the distribution position of the material on the heating disc, and the material is easy to form a spiral distribution during the process, which cannot realize uniform contact with the heating disc, so that the moisture cannot be quickly evaporated, and the drying efficiency is low. SUMMARY

[0004] In order to overcome the shortcomings described in the background, the present application provides a dryer used in the production process of fluorinated ethylene carbonate.

[0005] The technical scheme is as follows: a dryer used in the production process of fluorinated ethylene carbonate, comprising a support frame, a treatment cylinder is fixedly connected to the support frame, two first trays and two second trays are fixedly connected in the treatment cylinder and staggered, an outlet shell is fixedly connected and communicated with the treatment cylinder, a fixed shell rotatingly connected with the two first trays is rotatingly connected in the treatment cylinder, the fixed shell penetrates through the two second trays, a driving module for driving the rotation of the fixed shell is installed on the treatment cylinder, four circles of cloth rakes are fixedly connected to the fixed shell, the first tray and the second tray are respectively in contact with the adjacent cloth rake, a first compression roller rotatingly connected in a circumferential direction is arranged at the position close to the upper first tray of the fixed shell, a plurality of circles of first compression blocks arranged in an array are fixedly connected to the first compression roller, a fixed shaft drivingly connected with the first compression roller through a bevel gear set is fixedly connected to the treatment cylinder, a first auxiliary drying mechanism is arranged at the position close to the upper second tray of the fixed shell, a second auxiliary drying mechanism is arranged at the position close to the lower first tray of the fixed shell, and a third auxiliary drying mechanism is arranged at the position close to the lower second tray of the fixed shell.

[0006] As preferred, the cloth rake close to the first tray is fixed with array distributed material scraping frames, the material scraping frames are in contact with the adjacent first compression roller, and all the material scraping frames on the same cloth rake are staggered with all the first compression blocks on the adjacent first compression roller.

[0007] As preferred, the first auxiliary drying mechanism includes circumferentially distributed second compression rollers, the second compression rollers are rotationally connected to the fixed shell close to the upper side of the second tray, the second compression rollers are drivingly connected with the fixed shaft through bevel gear sets, the second compression rollers are fixed with array distributed second compression blocks, the second compression rollers are provided with material scraping frames, and the material scraping frames are in contact with the upper side of the second tray.

[0008] As preferred, the second auxiliary drying mechanism includes circumferentially distributed support plates, the support plates are arranged on the fixed shell close to the lower side of the first tray, the support plates are rotationally connected with third compression rollers, the cloth rake close to the lower side of the first tray is fixed with a material distributing frame, the material distributing frame is located on the lower side of the adjacent third compression roller and is in contact with the lower side of the first tray, the fixed shell is provided with a driving slide, and the third compression roller is drivingly connected with the driving slide through bevel gear sets.

[0009] As preferred, the third auxiliary drying mechanism includes a support shaft, the support shaft is fixed to the processing cylinder and located in the fixed shell, the fixed shell is rotationally connected with circumferentially distributed fourth compression rollers close to the lower side of the second tray, and the fourth compression rollers are drivingly connected with the support shaft through bevel gear sets.

[0010] As preferred, all the first compression rollers, all the second compression rollers, all the third compression rollers and all the fourth compression rollers are staggered with the adjacent cloth rakes.

[0011] As preferred, a first adjusting mechanism is further included, which is arranged in the fixed shell and is used to drive all the material scraping frames to rotate, the first adjusting mechanism includes a driving rack, the driving rack is slidingly connected in the fixed shell, the material scraping frames are drivingly connected with the driving rack through gears, the material scraping frames are rotationally connected with the adjacent second compression rollers, the processing cylinder is installed with a first push rod through a support, the first push rod is fixed with a first rod at the telescopic end, and the first rod is slidingly connected with the driving rack.

[0012] As preferred, a second adjusting mechanism is further included and arranged in the fixed shell for driving all the third compression rollers to move, the second adjusting mechanism includes a second push rod, the second push rod is fixedly connected to a support of the processing cylinder, an extension end of the second push rod is fixedly connected with a second rod, the second rod is slidably connected with a driving slide, the driving slide is rotationally connected with a connecting frame, the third compression roller is rotationally connected with the connecting frame, the supporting plate is slidably connected with the fixed shell, and the driving slide is spline-connected with the supporting shaft.

[0013] As preferred, a shielding mechanism is further included and arranged in the processing cylinder for shielding all the first trays and all the second trays, the shielding mechanism includes a third push rod, the third push rod is fixedly connected to a support of the processing cylinder, an extension end of the third push rod is fixedly connected with a mounting frame, the mounting frame is fixedly connected with two outer shielding ring frames, the outer shielding ring frames are used for shielding the outer sides of the adjacent first trays, the outer shielding ring frames are rotationally connected with inner shielding ring frames, the inner shielding ring frames are slidably connected with the fixed shell, and the inner shielding ring frames are used for shielding the inner sides of the adjacent second trays.

[0014] As preferred, the outer side of the outer shielding ring frame and the inner side of the inner shielding ring frame are both provided with an inclined annular surface.

[0015] The present application has the following advantages: the first compression roller is used to extrude the initial material, flatten the material, and make the material fully contact with the first tray, so as to improve the drying efficiency; and the first compression block is used to extrude the material and change the distribution state of the material, so as to make the material evenly heated.

[0016] The material adhered to the first compression roller is scraped off by the scraping frame, so as to reduce the adhesion amount of the material on the first compression roller and ensure the normal use of the first compression roller and the first compression block.

[0017] The second compression roller and the second compression block are used to extrude the material in the region, so as to discharge the moisture and air in the material, disperse the material, change the distribution state of the material, facilitate the uniform heating of the material, and facilitate the drying of the material.

[0018] The material is cut by the material dividing frame, so as to further change the distribution state of the material, re-open a large number of evaporation surfaces and internal paths, facilitate the drying of the material, and clean the material adhered to the second compression roller, so as to ensure the normal use of the second compression roller. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic view of the three-dimensional structure of the present application;

[0020] Figure 2 It is a sectional view of the three-dimensional structure of the processing cylinder of the present application;

[0021] Figure 3 This is a three-dimensional structural diagram of the first tray and the second tray of the present invention;

[0022] Figure 4 This is a three-dimensional structural cross-sectional view of the discharge shell and the fixing shell of the present invention;

[0023] Figure 5 This is a three-dimensional structural diagram of the fabric rake and the first pressure roller of the present invention;

[0024] Figure 6 This is an exploded three-dimensional view of the component at the fixed shaft of the present invention;

[0025] Figure 7 This is a three-dimensional structural diagram of the second pressure roller and the second pressure block of the present invention;

[0026] Figure 8 This is an exploded three-dimensional view of the cutting frame and the drive rack frame of the present invention;

[0027] Figure 9 This is a three-dimensional structural diagram of the support plate and support shaft of the present invention;

[0028] Figure 10 This is an exploded three-dimensional view of the components at the third pressure roller of the present invention;

[0029] Figure 11 This is a three-dimensional structural diagram of the support shaft and the fourth pressure roller of the present invention;

[0030] Figure 12 This is a three-dimensional structural diagram of the third push rod and mounting bracket of the present invention;

[0031] Figure 13 This is an exploded three-dimensional view of the outer retaining ring frame and the inner retaining ring frame of the present invention.

[0032] Explanation of reference numerals in the attached drawings: 1-Support frame, 2-Processing cylinder, 3-First tray, 4-Second tray, 5-Discharge shell, 6-Fixing shell, 7-Drive module, 8-Material rake, 9-First pressure roller, 10-First pressure block, 11-Fixing shaft, 12-Scraper frame, 21-Second pressure roller, 22-Second pressure block, 23-Splitting frame, 24-Drive rack frame, 25-First push rod, 26-First rod, 31-Support plate, 32-Third pressure roller, 33-Distribution frame, 34-Drive slide, 35-Second push rod, 36-Second rod, 37-Connecting frame, 41-Support shaft, 42-Fourth pressure roller, 51-Third push rod, 52-Mounting frame, 53-Outer retaining ring frame, 54-Inner retaining ring frame. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0034] Example 1

[0035] This example discloses a dryer for use in the production of fluoroethylene carbonate, for drying by-products (hereinafter referred to as material) in the production of fluoroethylene carbonate, which are initially in the form of a block of wet cake.

[0036] As Figures 1-6As shown, including support frame 1, support frame 1 is fixedly connected with processing cylinder 2, the top of processing cylinder 2 is provided with feeder, the upper side of processing cylinder 2 is communicated with exhaust module, the exhaust module is used for discharging exhaust generated in processing cylinder 2, the front side of processing cylinder 2 is provided with control module, the control module is electrically connected with all electrical elements in the text, two first trays 3 and two second trays 4 are fixedly connected in processing cylinder 2, the first tray 3 and the second tray 4 are staggered, the first tray 3 and the second tray 4 are provided with heating wires (this part is the existing structure, not shown in the figure), processing cylinder 2 is fixedly connected and communicated with discharge shell 5, discharge shell 5 is fixedly connected with lower second tray 4, processing cylinder 2 is rotatably connected with fixed shell 6, two first trays 3 are rotatably connected with fixed shell 6, fixed shell 6 penetrates two second trays 4, and fixed shell 6 has a gap between two second trays 4, for making the material on the second tray 4 move downward, the processing cylinder 2 is provided with a drive module 7 for driving the fixed shell 6 to rotate, the drive module 7 is composed of a servo motor and a belt wheel belt group, four circles of material rakes 8 are fixedly connected on the fixed shell 6, the number of each circle of material rake 8 is four, four circles of material rakes 8 are located on the upper side of two first trays 3 and two second trays 4 respectively, the material rake 8 is used for turning over the material on the first tray 3 (the second tray 4) and guiding the part of the material, wherein the material rake 8 on the first tray 3 will guide the material outward, the material rake 8 on the second tray 4 will guide the material to the middle (i.e. the inclination direction of the material rake 8 on the first tray 3 is opposite to the inclination direction of the material rake 8 on the second tray 4, which is the existing structure), the first tray 3 and the second tray 4 are respectively in contact with the adjacent material rake 8, the fixed shell 6 is rotatably connected with four first compression rollers 9 distributed in the circumferential direction near the upper first tray 3, the first compression roller 9 is used for flattening and extruding the blocky wet filter cake shaped material, the first compression roller 9 presses the thick filter cake shaped material into a sheet, significantly increases the contact area of the material and the tray, and greatly reduces the thermal resistance, the outer side of the first compression roller 9 is fixedly connected with a plurality of first compression blocks 10 arranged in an array, the first compression block 10 is X-shaped, used for separating the material and changing the shape of the material, facilitating uniform heating of the material, the processing cylinder 2 is fixedly connected with a fixed shaft 11, the first compression roller 9 is drivingly connected with the fixed shaft 11 through a bevel gear set, the drive module 7 drives all the material rakes 8 and the first compression rollers 9 to rotate in the circumferential direction through the fixed shell 6, the first compression roller 9 rotates around the fixed shaft 11 and rotates by the bevel gear set, after the material passes through the upper first tray 3, the material changes into a viscous paste, the fixed shell 6 is provided with a first auxiliary drying mechanism near the upper second tray 4 for drying the viscous paste, after the viscous paste passes through the upper second tray 4, the material changes into plastic mud, the fixed shell 6 is provided with a second auxiliary drying mechanism near the lower first tray 3 for drying the material in plastic mud state, and then the material changes into a semi-wet granular state,The fixed shell 6 is provided with a third auxiliary drying mechanism for drying the semi-wet granular material near the lower second tray 4, so that the discharged material is in a dry crystalline state.

[0037] As shown in Figure 5 and Figure 6 , the material rake 8 near the upper first tray 3 is fixed with an array of material scraping frames 12, which are located on the upper side of the adjacent first compression roller 9 and are in contact with the adjacent first compression roller 9, and all the material scraping frames 12 on the same material rake 8 are distributed with all the first compression blocks 10 on the adjacent first compression roller 9, the material scraping frames 12 are used to scrape the material between the adjacent two first compression blocks 10 on the first compression roller 9, and the material scraping frames 12 are not in contact with the upper first tray 3.

[0038] As shown in Figures 2-4 , Figure 7 and Figure 8 , the first auxiliary drying mechanism includes four second compression rollers 21 distributed in a circle, which are used to extrude the viscous paste material to expel the air contained in the material, so as to facilitate the drying of the material, the second compression rollers 21 are rotatably connected to the fixed shell 6 near the upper second tray 4, and are drivingly connected to the fixed shaft 11 through a bevel gear set, the second compression rollers 21 are fixed with an array of several circles of second compression blocks 22, which are used to extrude and separate the viscous paste material to change the distribution state of the material and facilitate uniform heating of the material, the second compression blocks 22 are consistent in shape with the first compression blocks 10, the second compression rollers 21 are provided with material scraping frames 23, which are used to disperse the compacted viscous paste material to further change the distribution state of the material and reopen a large number of internal and external paths for water evaporation, and the material scraping frames 23 can also clean the material adhered to the second compression rollers 21, and the material scraping frames 23 are in contact with the upper second tray 4.

[0039] As shown in Figures 2-4 , Figure 9 and Figure 10As shown, the second auxiliary drying mechanism includes four circumferentially distributed support plates 31, which are arranged on the fixed shell 6 near the lower first tray 3. In this embodiment, the support plates 31 are fixedly connected to the fixed shell 6. The third compression roller 32 is rotatably connected to the support plate 31 and is used to flatten the material in a plastic mud state, continuously break the clumped material and the crust on the surface of the material, so that the wet interior is exposed to fully contact the lower first tray 3. The distribution rake 8 near the lower first tray 3 is fixedly connected to the material distribution rack 33, which is used to disperse the flattened material and further optimize the shape of the material to ensure that the evaporation path of the moisture is always unobstructed. The material distribution rack 33 is located below the adjacent third compression roller 32 and is in contact with the lower first tray 3. The fixed shell 6 is provided with a drive carriage 34, and the third compression roller 32 is drivingly connected to the drive carriage 34 through a bevel gear set.

[0040] As shown in Figures 2-4 , Figure 9 and Figure 11 , the third auxiliary drying mechanism includes a support shaft 41 fixedly connected to the processing cylinder 2 and located in the fixed shell 6. The upper side of the support shaft 41 is provided with a spline groove. The fixed shell 6 is rotatably connected to four circumferentially distributed fourth compression rollers 42 near the lower second tray 4. The fourth compression rollers 42 extrude the semi-wet material to crush the particles inside. The fourth compression rollers 42 are drivingly connected to the support shaft 41 through a bevel gear set. All first compression rollers 9, all second compression rollers 21, all third compression rollers 32, and all fourth compression rollers 42 are respectively staggered with the adjacent circle of distribution rakes 8.

[0041] When the device is used to dry the material, the exhaust module, the heating wires on the first tray 3 (second tray 4), and the drive module 7 are turned on. The drive module 7 drives all the distribution rakes 8 to rotate through the fixed shell 6. When the temperature in the processing cylinder 2 reaches a specified value, the material is introduced from the feeder into the processing cylinder 2. First, the material falls onto the upper first tray 3. The distribution rakes 8 push the material on the first tray 3 (second tray 4) to gradually move outward and fall onto the upper second tray 4. The material on the upper second tray 4 gradually moves inward and falls onto the lower first tray 3. The material on the lower first tray 3 moves outward and falls onto the lower second tray 4. The material on the lower second tray 4 moves inward and falls into the lower discharge shell 5. Finally, the dried material is discharged from the processing cylinder 2.

[0042] In the process of rotating the fixed shell 6, the fixed shell 6 drives all the first pressure rollers 9 to rotate circumferentially, the first pressure rollers 9 rotate under the action of the bevel gear set, the first pressure rollers 9 drive the first pressure blocks 10 to rotate, in the process, the first pressure rollers 9 compact the material and make the material into a thin cake, the first pressure blocks 10 extrude the material, change the position of the material, and through the cooperation of the first pressure blocks 10 and the first pressure rollers 9, the material is formed into a thin cake with X-shaped grooves, so that the material is flattened, and the drying efficiency of the material is improved.

[0043] In the process of rotating the fixed shell 6, the material rake 8 close to the second pressure roller 21 drives the material cutting frame 23 on it to rotate circumferentially, the material cutting frame 23 cuts the material, at the same time, the fixed shell 6 drives all the second pressure rollers 21 on it to rotate circumferentially, the second pressure rollers 21 drive the second pressure blocks 22 on them to rotate, and the second pressure rollers 21 rotate under the action of the bevel gear set, in this process, the material cutting frame 23 first disperses the viscous paste material, changes the distribution of the material, and makes the material uniformly contact with the upper second tray 4, then the adjacent second pressure roller 21 and the second pressure block 22 jointly extrude the part of the material (viscous paste material), and the viscous paste material is flattened again, so that the part of the material is fully in contact with the upper second tray 4, thereby improving the drying efficiency of the viscous paste material.

[0044] In the process of rotating the fixed shell 6, the fixed shell 6 drives all the support plates 31 on it to rotate, the support plates 31 drive the third pressure rollers 32 on them to rotate, at the same time, the material rake 8 close to the support plates 31 drives the material distribution frame 33 on it to rotate synchronously, in the process, the material distribution frame 33 and the third pressure roller 32 jointly process the material (plastic mud), that is, the material distribution frame 33 disperses the material, ensures that the water evaporation channel is always unobstructed, and the third pressure roller 32 extrudes the material, changes the form of the material, and breaks the dry surface of the material.

[0045] In the process of rotating the fixed shell 6, the fixed shell 6 drives all the fourth pressure rollers 42 on it to rotate, the fourth pressure rollers 42 rotate under the action of the bevel gear set, the fourth pressure rollers 42 extrude the material (semi-hydrated material), change the state of the material, and crush the dry particles on the surface of the material, so that the material is evenly heated.

[0046] After the material is dried, the exhaust module, the heating wire on the first tray 3 (the second tray 4), and the driving module 7 are turned off.

[0047] Example 2

[0048] On the basis of embodiment 1, this embodiment proposes a way to adjust the position of the material cutting frame 23, which is mainly aimed at the situation that the material on the upper first tray 3 has not been dried to the specified degree during the drying process, and then falls onto the upper second tray 4, that is, the humidity of the material on the upper second tray 4 increases. To solve this problem, the following solution is proposed:

[0049] As shown in Figure 7 and Figure 8 , it also includes a first adjusting mechanism arranged in the fixed shell 6 for driving all the material cutting frames 23 to rotate. The first adjusting mechanism includes a driving rack 24 composed of a sliding ring and four racks. The driving rack 24 is slidingly connected in the fixed shell 6. The material cutting frame 23 is in transmission connection with the driving rack 24 through a gear. The material cutting frame 23 is in rotational connection with the adjacent second compression roller 21. The driving rack 24 drives the material cutting frame 23 to rotate, changes the contact position of the material cutting frame 23 and the adjacent second compression roller 21, and thus controls the relationship between the material cutting frame 23 and the upper second tray 4. The first push rod 25 is installed on the processing cylinder 2 through a support. The first rod 26 is fixedly connected to the extension end of the first push rod 25. The extension end of the first push rod 25 drives the first rod 26 to move. The first rod 26 is in sliding connection with the driving rack 24. The first rod 26 drives the driving rack 24 to move up and down.

[0050] After the humidity of the material on the upper second tray 4 increases, the first push rod 25 is started. The extension end of the first push rod 25 drives all the material cutting frames 23 to rotate through the first rod 26 and the driving rack 24, so that the material cutting frame 23 loses contact with the upper second tray 4 and the material on the upper second tray 4, that is, the material cutting frame 23 does not cut the material on the upper second tray 4. After the material on the upper second tray 4 is extruded by the second compression roller 21, the material is temporarily placed on the hot plate, so that the heat of the upper second tray 4 continuously and gently penetrates the core of the material, and the internal moisture is more thoroughly migrated to the surface, which prepares for the next cycle of turning and evaporation.

[0051] In this embodiment, the first push rod 25 can also be started at a regular time, so that the material can fully contact with the upper second tray 4, and the drying effect of the material is enhanced.

[0052] Embodiment 3

[0053] The characteristic of the plastic mud-like material is that it is extremely sticky and easily deformed. The huge surface area and strong extrusion force of the compression roller can make it become a huge "magnet" instantly. The material will be densely wrapped and adhered to the surface of the compression roller, forming a stubborn "material sleeve". The material adhered to the surface of the compression roller will be repeatedly heated, which is easy to caramelize and contaminate the subsequent products.

[0054] On the basis of embodiment 2, as shown in Figure 9and Figure 10 The second adjusting mechanism is arranged in the fixed shell 6 and is used to drive all the third compression rollers 32 to move. The second adjusting mechanism comprises a second push rod 35. The second push rod 35 is of a known structure and is fixedly connected to the support of the processing cylinder 2. The second push rod 35 is fixedly connected with a second rod 36 at the telescopic end. The second rod 36 is in sliding connection with the driving slide 34. The driving slide 34 is rotationally connected with a connecting frame 37. The connecting frame 37 is composed of four annular rings at the upper part, four L-shaped rods at the middle part and a ring plate at the lower part. The third compression roller 32 is rotationally connected with the adjacent annular ring of the connecting frame 37. The support plate 31 is in sliding connection with the fixed shell 6. The driving slide 34 is provided with a spline at the lower side. The spline of the driving slide 34 is in sliding connection with the spline groove of the support shaft 41.

[0055] During the extrusion of the plastic mud material by the third compression roller 32, the second push rod 35 is controlled periodically. The telescopic end of the second push rod 35 drives the driving slide 34 to move upward through the second rod 36. The driving slide 34 drives all the third compression rollers 32 to move upward through the connecting frame 37. The third compression roller 32 drives the adjacent support plate 31 to move upward. That is, the support plate 31 slides upward along the fixed shell 6. In this way, the position of the third compression roller 32 is changed. The third compression roller 32 loses contact with the material. That is, the extrusion of the material is stopped. The porous structure inside the material is maintained. The water migration channel is maintained. At the same time, the amount of the material adhered to the third compression roller 32 is reduced. During the lifting of the third compression roller 32, the material adhered to the third compression roller 32 will fall under the action of gravity and fall onto the second tray 4 below again. During this process, the material distribution frame 33 is always in working condition. The contact area of the material distribution frame 33 with the material is small. The cutting action of the material distribution frame 33 is not easy to cause large-area adhesion. Therefore, it is ensured that the drying process can be operated for a long time, continuously and stably.

[0056] Example 4

[0057] On the basis of example 3, as Figure 3 , Figure 12 and Figure 13As shown, the device also comprises a shielding mechanism arranged in the processing cylinder 2 for shielding all the first trays 3 and all the second trays 4, the shielding mechanism comprises a third push rod 51, the third push rod 51 is of a known structure, the third push rod 51 is fixedly connected to a support of the processing cylinder 2, the telescopic end of the third push rod 51 is fixedly connected to a mounting frame 52, the mounting frame 52 is fixedly connected to two outer shielding ring frames 53, the outer shielding ring frame 53 is composed of a circular ring and a circumferentially distributed L-shaped frame, wherein the circular ring mainly plays a shielding role, the outer shielding ring frame 53 is used for shielding the outer side of the adjacent first tray 3, the outer shielding ring frame 53 is rotationally connected to an inner shielding ring frame 54, the inner shielding ring frame 54 is composed of an upper circular ring, a lower circular ring and a straight rod in the middle, the lower circular ring mainly plays a shielding role, the inner shielding ring frame 54 is slidably connected to the fixed shell 6, the inner shielding ring frame 54 is used for shielding the inner side of the adjacent second tray 4; the outer side of the outer shielding ring frame 53 and the inner side of the inner shielding ring frame 54 are both provided with an inclined annular surface, the inclined annular surface is used for guiding the material and reducing the amount of material accumulated on the outer shielding ring frame 53 and the inner shielding ring frame 54, the thickness of the circular ring of the outer shielding ring frame 53 is greater than the thickness of the first tray 3, and the thickness of the lower circular ring of the inner shielding ring frame 54 is greater than the thickness of the middle part of the second tray 4.

[0058] In the process of drying the material, when the material in one of the trays is not fully dried, the third push rod 51 is controlled, the telescopic end of the third push rod 51 drives the mounting frame 52 to move upward, the mounting frame 52 drives the two outer shielding ring frames 53, the outer shielding ring frames 53 drive the adjacent inner shielding ring frames 54 to move upward synchronously until the upper circular ring of the outer shielding ring frame 53 moves to Figure 12 As shown, the third push rod 51 is closed at this time, and the circular ring of the outer shielding ring frame 53 shields the circumferential side of the adjacent first tray 3, so that the material cannot fall into the second tray 4 below, thereby prolonging the time for the material to stay on the first tray 3.

[0059] After the third push rod 51 stops moving, the lower circular ring of the inner shielding ring frame 54 moves to Figure 12 As shown, the lower circular ring of the inner shielding ring frame 54 shields the inner side of the adjacent second tray 4, so that the material on the second tray 4 cannot fall into the first tray 3 (the discharge shell 5) below, thereby prolonging the time for the material to stay on the second tray 4.

[0060] After the third push rod 51 stops, the driving module 7 is controlled to rotate reversely, all the rakes 8 are driven to rotate reversely, so that the rakes 8 push the material reversely, i.e. the material on the first tray 3 (the second tray 4) is conveyed inwardly (outwardly), in this process, the driving module 7 can also be controlled to reciprocate, so that the material moves reciprocally on the first tray 3 (the second tray 4), thereby ensuring that the material is fully dried.

[0061] After the materials at different heights are dried to the specified state, the extension end of the third push rod 51 is reset, the outer blocking ring frame 53 (the inner blocking ring frame 54) is released from the blocking of the adjacent first tray 3 (the second tray 4), so that the materials normally move downward.

[0062] The above examples are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and to implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. A dryer for use in a fluoroethylene carbonate production process, comprising a support frame (1), a processing cylinder (2) fixedly connected to the support frame (1), two first trays (3) and two second trays (4) fixedly connected in the processing cylinder (2) and staggered from top to bottom, a discharge shell (5) fixedly connected to and in communication with the processing cylinder (2), a fixed shell (6) rotatably connected to the two first trays (3) rotatably connected to the processing cylinder (2), the fixed shell (6) penetrating the two second trays (4), a driving module (7) installed on the processing cylinder (2) for driving the fixed shell (6) to rotate, four rakes (8) fixedly connected to the fixed shell (6), the first trays (3) and the second trays (4) being in contact with adjacent rakes (8), the rakes (8) on the first trays (3) guiding the material outward, and the rakes (8) on the second trays (4) guiding the material to the center, characterized in that, The fixed shell (6) is rotatably connected with a first compression roller (9) which is circumferentially distributed near the first tray (3) on the upper side, the first compression roller (9) is fixedly connected with a plurality of first compression blocks (10) which are arrayed distributed, a fixed shaft (11) is fixedly connected with the first compression roller (9) through a bevel gear set on the processing cylinder (2), the fixed shell (6) is provided with a first auxiliary drying mechanism near the second tray (4) on the upper side, the fixed shell (6) is provided with a second auxiliary drying mechanism near the first tray (3) on the lower side, the fixed shell (6) is provided with a third auxiliary drying mechanism near the second tray (4) on the lower side; The first auxiliary drying mechanism comprises a second compression roller (21) which is circumferentially distributed, the second compression roller (21) is rotatably connected to the fixed shell (6) near the second tray (4) on the upper side, the second compression roller (21) is drivingly connected with the fixed shaft (11) through a bevel gear set, the second compression roller (21) is fixedly connected with a plurality of second compression blocks (22) which are arrayed distributed, the second compression roller (21) is provided with a material scraping frame (23), the material scraping frame (23) is in contact with the second tray (4) on the upper side; The drying machine further comprises a first adjusting mechanism which is arranged in the fixed shell (6) and is used for driving all the material scraping frames (23) to rotate, the first adjusting mechanism comprises a driving rack (24), the driving rack (24) is slidingly connected in the fixed shell (6), the material scraping frame (23) is drivingly connected with the driving rack (24) through a gear, the material scraping frame (23) is rotatably connected with the adjacent second compression roller (21), the processing cylinder (2) is mounted with a first push rod (25) through a support, the first push rod (25) is fixedly connected with a first rod (26) at the telescopic end, the first rod (26) is slidingly connected with the driving rack (24).

2. A dryer for use in the production of fluoroethylene carbonate according to claim 1, characterized in that, The material scraping frames (12) which are arrayed distributed are fixedly connected to the material rake (8) near the first tray (3) on the upper side, the material scraping frames (12) are in contact with the adjacent first compression roller (9), and all the material scraping frames (12) on the same material rake (8) are staggered distributed with all the first compression blocks (10) on the adjacent first compression roller (9).

3. A dryer for use in the production of fluoroethylene carbonate according to claim 1, characterized in that, The second auxiliary drying mechanism comprises a support plate (31) which is circumferentially distributed, the support plate (31) is arranged near the first tray (3) on the lower side in the fixed shell (6), the support plate (31) is rotatably connected with a third compression roller (32), the material rake (8) near the first tray (3) on the lower side is fixedly connected with a material distributing frame (33), the material distributing frame (33) is located at the lower side of the adjacent third compression roller (32) and is in contact with the first tray (3) on the lower side, a driving sliding frame (34) is arranged in the fixed shell (6), the third compression roller (32) is drivingly connected with the driving sliding frame (34) through a bevel gear set.

4. A dryer for use in the production of fluoroethylene carbonate according to claim 3, characterized by, The third auxiliary drying mechanism comprises a support shaft (41) fixed to the processing cylinder (2) and located in the fixed shell (6), and a fourth compression roller (42) is rotationally connected to the fixed shell (6) near the lower second tray (4) in a circumferential distribution, and the fourth compression roller (42) is drivingly connected to the support shaft (41) through a bevel gear set.

5. A dryer for use in the production of fluoroethylene carbonate according to claim 4, characterized by, All the first compression rollers (9), all the second compression rollers (21), all the third compression rollers (32) and all the fourth compression rollers (42) are staggered with the adjacent cloth rakes (8) respectively.

6. A dryer for use in the production of fluoroethylene carbonate according to claim 4, characterized by, A second adjusting mechanism is further included, which is arranged in the fixed shell (6) and used to drive all the third compression rollers (32) to move, and the second adjusting mechanism comprises a second push rod (35) fixed to a support of the processing cylinder (2), a second rod (36) fixed to a telescopic end of the second push rod (35), a driving slide rack (34) slidingly connected to the second rod (36), a connecting rack (37) rotationally connected to the driving slide rack (34), the third compression roller (32) rotationally connected to the connecting rack (37), a support plate (31) slidingly connected to the fixed shell (6), and the driving slide rack (34) spline-connected to the support shaft (41).

7. A dryer for use in the production of fluoroethylene carbonate according to claim 1, characterized in that, A shielding mechanism is further included, which is arranged in the processing cylinder (2) and used to shield all the first trays (3) and all the second trays (4), and the shielding mechanism comprises a third push rod (51) fixed to a support of the processing cylinder (2), a mounting rack (52) fixed to a telescopic end of the third push rod (51), two outer shielding ring racks (53) fixed to the mounting rack (52) and used to shield the outer sides of the adjacent first trays (3), and an inner shielding ring rack (54) rotationally connected to the outer shielding ring rack (53) and slidingly connected to the fixed shell (6) and used to shield the inner sides of the adjacent second trays (4).

8. A dryer for use in the production of fluoroethylene carbonate according to claim 7, characterized by, The outer side of the outer shielding ring rack (53) and the inner side of the inner shielding ring rack (54) are both provided with inclined annular surfaces.

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