阅读说明：本技术 一种双三氟甲基磺酰亚胺锂干燥装置 (Lithium bis (trifluoromethyl) sulfonyl imide drying device ) 是由 林坤 王亚峰 马朝选 罗建志 于 2021-08-25 设计创作，主要内容包括：本发明提供了一种双三氟甲基磺酰亚胺锂干燥装置,涉及锂离子电池制造技术领域,包括真空干燥舱；所述真空干燥舱后端外曲侧面通过焊接固定连接有第一限位环；所述第一限位环后方设置有第二限位环；所述真空干燥舱曲侧面顶部固定连接有进料管；所述进料管内部通过法兰连接设置有防泄阀；所述真空干燥舱后端设置有倾斜抬升结构；所述倾斜抬升结构包括有承接箍、固定箍和底部轴震荡片的设置,可通过超声波高频振动,使震荡片带动真空干燥舱进行震动,使干燥过程中的双三氟甲基磺酰亚胺锂液体内水分通过震动,更易提高双三氟甲基磺酰亚胺锂冰晶升华的效率,解决了现有装置未设置可提高冷冻干燥过程中冰晶升华的效率的结构的问题。(The invention provides a bis (trifluoromethyl) sulfonyl imide lithium drying device, which relates to the technical field of lithium ion battery manufacturing and comprises a vacuum drying cabin; the outer curved side surface of the rear end of the vacuum drying cabin is fixedly connected with a first limiting ring through welding; a second limiting ring is arranged behind the first limiting ring; the top of the curved side surface of the vacuum drying cabin is fixedly connected with a feeding pipe; an anti-leakage valve is arranged in the feeding pipe through flange connection; an inclined lifting structure is arranged at the rear end of the vacuum drying cabin; the slope lifting structure vibrates the setting of piece including bearing collar, fixed hoop and bottom axle, and accessible ultrasonic wave high frequency vibration makes to vibrate the piece and drives the vacuum drying cabin and shake, makes the interior moisture of the two trifluoromethyl sulfonyl imide lithium liquid in the drying process through vibrations, changes the efficiency that improves two trifluoromethyl sulfonyl imide lithium ice crystals sublime, has solved the problem that current device does not set up the structure that can improve the sublime efficiency of ice crystal among the freeze-drying process.)

1. A lithium bis (trifluoromethyl) sulfonyl imide drying device is characterized in that: the device comprises a vacuum drying cabin (1), wherein a first limiting ring (101) and a second limiting ring (102) are arranged at the rear end of the vacuum drying cabin (1);

the top of the curved side surface of the vacuum drying cabin (1) is fixedly connected with a feeding pipe (103); an anti-leakage valve (104) is arranged in the feeding pipe (103) through flange connection; the front end of the vacuum drying cabin (1) is provided with a sealing cabin door (105) through hinge connection; the left side of the curved side surface of the vacuum drying cabin (1) is fixedly connected with a first side pipe (106); a first check valve (107) is arranged on the left side of the first side pipe (106) through flange connection;

the outer curved side surface of the front end of the vacuum drying cabin (1) is provided with a support hoop (108) through a hoop connection; a second side pipe (109) is fixedly connected to the right side of the curved side surface of the vacuum drying cabin (1); the right side of the second side pipe (109) is provided with a second one-way valve (1010) through flange connection;

the inner curved side surface of the vacuum drying cabin (1) is provided with a heating layer (1011) in an interference fit connection manner; a heating resistance wire is arranged inside the heating layer (1011);

an inclined lifting structure (2) is arranged at the rear end of the vacuum drying cabin (1); the inclined lifting structure (2) comprises a bearing ring (201), a fixed hoop (202) and a bottom shaft (203); the coupling bearing ring (201) is arranged between a first limiting ring (101) and a second limiting ring (102) at the bottom of the curved side surface at the rear end of the vacuum drying cabin (1); the top of the bearing ring (201) is fixedly connected with a fixed hoop (202) through a bolt; the tail end of the side surface of the bottom of the bearing ring (201) is fixedly connected with two groups of bottom shafts (203).

2. The lithium bis (trifluoromethyl) sulfonimide drying apparatus according to claim 1, wherein: the inclined lifting structure (2) further comprises extension plates (204) and hinge rods (205), wherein the extension plates (204) are provided with two groups, and the extension plates (204) are symmetrically connected to the outer side of the bottom shaft (203) through hinge pieces.

3. The lithium bis (trifluoromethyl) sulfonimide drying apparatus according to claim 2, wherein: the top surface of the extension plate (204) is provided with a hinged rod (205) through hinging, and the top of the hinged rod (205) is fixed with extension planes on two sides of the coupling bearing ring (201).

4. The lithium bis (trifluoromethyl) sulfonimide drying apparatus according to claim 3, wherein: extend board (204) bottom and pass through bolt fixedly connected with pneumatic cylinder (3), pneumatic cylinder (3) pars contractilis top and extend board (204) fixed connection, pneumatic cylinder (3) quantity sets up to four groups.

5. The lithium bis (trifluoromethyl) sulfonimide drying apparatus according to claim 1, wherein: the right side of the first one-way valve (107) is provided with a refrigeration compressor (4) through a flexible pipeline, and the left side of the first side pipe (106) is fixedly connected with a condensation pipe (401) in the vacuum drying cabin (1) through welding.

6. The lithium bis (trifluoromethyl) sulfonimide drying apparatus according to claim 5, wherein: condenser pipe (401) are located between zone of heating (1011) and vacuum drying cabin (1) shell, just condenser pipe (401) are the heliciform and twine in zone of heating (1011) outer curved side.

7. The lithium bis (trifluoromethyl) sulfonimide drying apparatus according to claim 5, wherein: condenser pipe (401) end is connected through interference fit and is provided with flexible hose (402) elastic hose (402) extend to vacuum drying cabin (1) outside and are provided with evaporimeter (403) through interference fit connection, evaporimeter (403) side fixedly connected with drain pipe (404), under-deck condensation structure is constituteed to refrigeration compressor (4), condenser pipe (401) and evaporimeter (403).

8. The lithium bis (trifluoromethyl) sulfonimide drying apparatus according to claim 1, wherein: the supporting hoop (108) is hinged to two sides of the supporting hoop and provided with supporting tables (5), a bottom plate (9) is arranged at the bottom of each supporting table (5), the bottom plate (9) is divided into two layers, a drawer (902) is arranged in the middle of the bottom plate (9) in a sliding connection mode, a discharge chute (901) is arranged above the drawer (902), a finished product collecting structure is formed by the bottom plate (9), the discharge chute (901) and the drawer (902), and four groups of vertical wheels are further hinged to the bottom of each supporting table (5).

9. The lithium bis (trifluoromethyl) sulfonimide drying apparatus according to claim 1, wherein: one side of the second side pipe (109) is connected with a vacuum pump (6) through a pipeline, the rear side face of the vacuum pump (6) is fixedly connected with a control box (7), and the vacuum drying cabin (1), the vacuum pump (6) and the control box (7) form a vacuum decompression structure.

10. The lithium bis (trifluoromethyl) sulfonimide drying apparatus according to claim 9, wherein: the vacuum drying cabin (1) is bent, and side bottom fixedly connected with four groups of vibration pieces (8), vibrate piece (8) bottom fixedly connected with ultrasonic transducer (801), ultrasonic transducer (801) circuit and control box (7) circuit phase coupling.

Technical Field

The invention belongs to the technical field of lithium battery manufacturing devices, and particularly relates to a lithium bis (trifluoromethyl) sulfonyl imide drying device.

Background

The bis (trifluoromethyl) sulfonyl imide lithium is white crystal or powder in appearance, is generally used as an important raw material of a lithium battery, has high conductivity and is still stable in low-temperature environment, can also be used as a catalyst for preparing and generating other chemical products, and needs to be dried after reacting with filtrate in the preparation process of the bis (trifluoromethyl) sulfonyl imide lithium to obtain a powdery finished product.

Through retrieval, patent No. CN109369474A discloses a preparation method of bis (trifluoromethylsulfonyl) imide lithium salt, which is characterized in that trifluoromethane gas is introduced into nonpolar solvent solution of alkyl lithium under the conditions of no water, nitrogen protection and low temperature to react to prepare trifluoromethyl lithium, after the reaction is finished, bis (trifluoromethylsulfonyl) imide lithium solution is slowly dripped into the trifluoromethyl lithium solution under the condition of low temperature, white solid is separated out in the dripping process, reaction solution is filtered after the dripping is finished, filtrate is decompressed and evaporated to dryness to obtain white solid wet salt, and the bis (trifluoromethylsulfonyl) imide lithium salt is obtained after vacuum drying.

For another example, patent No. CN107188138A discloses a method for preparing lithium bis (fluorosulfonyl) imide, which comprises the following steps: 1 preparing lithium fluorosulfonamide; 2, preparing sulfuryl fluoride, introducing the sulfuryl fluoride into a lithium fluorosulfonamide solution, and adding an acid-binding agent to prepare bis (fluorosulfonyl) imide ammonium salt; dissolving the ammonium bifluorosulfonyl imide salt into an aqueous solution, and performing acid resin exchange to obtain a bifluorosulfonyl imide aqueous solution; 4, adding lithium carbonate, adjusting the pH value to be neutral, filtering to remove insoluble substances, removing most of water under reduced pressure, adding a weak-polarity organic solvent to precipitate a crude product of the lithium bis (fluorosulfonyl) imide, and further drying under reduced pressure; and 5, adding a polar solvent into the crude product of the lithium bis (fluorosulfonyl) imide, stirring for dissolving, filtering to remove insoluble substances, removing the strong polar solvent under reduced pressure, adding the weak polar solvent for recrystallization, filtering, and drying under reduced pressure to obtain the product.

However, the existing lithium bis (trifluoromethyl) sulfonyl imide drying device is generally of a cylindrical structure, a structure capable of improving ice crystal sublimation efficiency in the lithium bis (trifluoromethyl) sulfonyl imide freeze-drying process is not arranged, a structure convenient for drying and smashing substances is not arranged, a structure capable of well storing tissue structures and appearance forms in the drying process is not arranged, and a structure capable of conveniently and rapidly collecting dried finished products is not arranged.

Therefore, the existing requirements are not met, and a lithium bis (trifluoromethyl) sulfonyl imide drying device is provided for the lithium bis (trifluoromethyl) sulfonyl imide drying device.

Disclosure of Invention

The present invention provides a lithium bis (trifluoromethyl) sulfonyl imide drying apparatus to solve the above problems in the background art.

In order to solve the technical problems, the invention adopts the technical scheme that: the lithium bis (trifluoromethyl) sulfonyl imide drying device comprises a vacuum drying cabin, wherein a first limiting ring and a second limiting ring are arranged at the rear end of the vacuum drying cabin;

the top of the curved side surface of the vacuum drying cabin is fixedly connected with a feeding pipe; an anti-leakage valve is arranged in the feeding pipe through flange connection; the front end of the vacuum drying cabin is provided with a sealing cabin door through hinge connection; the left side of the curved side surface of the vacuum drying cabin is fixedly connected with a first side pipe; the left side of the first side pipe is provided with a first one-way valve through flange connection;

the outer curved side surface of the front end of the vacuum drying cabin is provided with a support hoop through a hoop connection; the right side of the curved side surface of the vacuum drying cabin is fixedly connected with a second side pipe; the right side of the second side pipe is provided with a second one-way valve through flange connection;

the curved side surface in the vacuum drying cabin is connected with a heating layer in an interference fit manner; a heating resistance wire is arranged inside the heating layer;

an inclined lifting structure is arranged at the rear end of the vacuum drying cabin; the inclined lifting structure comprises a bearing ring, a fixed hoop and a bottom shaft; the bearing ring is arranged between the first limiting ring and the second limiting ring at the bottom of the curved side surface at the rear end of the vacuum drying cabin; the top of the bearing hoop is fixedly connected with a fixed hoop through a bolt; and the tail ends of the side faces of the bottom of the bearing hoop are fixedly connected with two groups of bottom shafts.

Further, the slope lifting structure is still including extending board, hinge bar, the extending board is provided with two sets ofly, and two sets ofly the connection that the extending board passes through the articulated elements symmetry is in the bottom off-axis side.

Furthermore, the top surface of the extension plate is provided with a hinged rod through hinged connection, and the top of the hinged rod is fixed with the extension planes on the two sides of the bearing hoop.

Further, the bottom of the extension plate is fixedly connected with hydraulic cylinders through bolts, the top of the telescopic part of each hydraulic cylinder is fixedly connected with the extension plate, and the hydraulic cylinders are arranged in four groups.

Furthermore, a refrigeration compressor is arranged on the right side of the first one-way valve through a flexible pipeline, and a condenser pipe is fixedly connected to the left side of the first side pipe in the vacuum drying cabin through welding.

Further, the condenser pipe is located between zone of heating and the vacuum drying cabin shell, just the condenser pipe is the outer curved side of heliciform winding in zone of heating.

Further, the condenser pipe is terminal to be connected through interference fit and to be provided with flexible hose elastic hose extends to the outside of vacuum drying cabin and is provided with the evaporimeter through interference fit connection, evaporimeter side fixedly connected with drain pipe, refrigeration compressor, condenser pipe and evaporimeter constitution under-deck cold condensation structure.

Furthermore, a supporting platform is hinged to two sides of the supporting hoop, a bottom plate is arranged at the bottom of the supporting platform and divided into two layers, a drawer is arranged in the middle of the bottom plate in a sliding connection mode, a discharge chute is arranged above the drawer, a finished product collecting structure is formed by the bottom plate, the discharge chute and the drawer, and four groups of vertical wheels are hinged to the bottom of the supporting platform.

Furthermore, there is a vacuum pump on one side of the second side pipe through a pipeline, a control box is fixedly connected to the rear side face of the vacuum pump, and the vacuum drying cabin, the vacuum pump and the control box form a vacuum pressure reduction structure.

Furthermore, four groups of oscillating plates are fixedly connected to the bottom of the curved side surface of the vacuum drying cabin, an ultrasonic transducer is fixedly connected to the bottom of the oscillating plate, and a circuit of the ultrasonic transducer is coupled with a circuit of the control box.

Compared with the prior art, the invention has the following advantages:

1. the invention can extend and extend the telescopic part of the hydraulic cylinder by arranging the inclined lifting structure and controlling the hydraulic cylinder to extend and retract by using the control box and a circuit, the telescopic part of the hydraulic cylinder is lifted by the telescopic part to drive the extension plate to lift the bearing ring, so that the tail part of the vacuum drying cabin is driven by the bearing ring to lift, the extension plate is connected with the bottom shaft, the vacuum drying cabin can freely rotate in the vertical direction when the bearing ring is lifted, the front end of the vacuum drying cabin horizontally moves backwards by lifting the tail part of the vacuum drying cabin, the front end of the vacuum drying cabin can rapidly move backwards by rolling the vertical wheels at the bottom of the supporting platform hinged at the bottom of the vacuum drying cabin, the dried lithium bistrifluoromethylsulfonyl imide powder slides from the vacuum drying cabin by gravity by opening the sealing cabin door, and the lithium bistrifluoromethylsulfonyl imide powder slides to the drawing hopper below the discharge chute through the hatch opening, the dry finished product can be conveniently and rapidly collected.

2. The invention is provided with a heating layer by the interference fit connection of the curved side surface in the vacuum drying cabin, the lithium bis (trifluoromethyl) sulfonyl imide mixed liquid is input into the vacuum drying cabin through a feeding pipe, the operation of a refrigeration compressor is controlled by a control box button, the refrigerant gas is compressed by the operation of the refrigeration compressor and then becomes high-temperature high-pressure gas, the refrigerant gas is wound through a condensing pipe and passes through the outside of the heating layer in the vacuum drying cabin, the heat is released to the air through the condensing pipe, the gaseous refrigerant is changed into liquid, the pressure and the flow of the refrigerant are adjusted by an expansion valve, the refrigerant is input into the refrigeration compressor through a pipeline after being evaporated by an evaporator, thereby realizing the circulating refrigeration, the lithium bis (trifluoromethyl) sulfonyl imide mixed liquid in the vacuum drying cabin is rapidly frozen through the condensing pipe, the operation of a vacuum pump is controlled by the control box button, and the internal air pressure of the vacuum drying cabin is reduced, the method comprises the steps of sublimating the lithium bistrifluoromethylsulfonyl imide ice crystals inside, starting the heating layer through a control box key, increasing the temperature of the heating layer to thirty-five degrees, and continuously supplying heat for sublimation of the ice crystals, so that freeze drying is realized.

3. According to the invention, four groups of oscillating plates are fixedly connected to the bottom of the curved side surface of the vacuum drying cabin, the ultrasonic transducer can be operated through an electric signal, the oscillating plates drive the vacuum drying cabin to vibrate through ultrasonic high-frequency vibration, so that water in the lithium bis (trifluoromethyl) sulfonyl imide liquid in the drying process is vibrated, the sublimation efficiency of the lithium bis (trifluoromethyl) sulfonyl imide ice crystals is improved more easily, and the material can be crushed after the drying is finished through the ultrasonic high-frequency vibration.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an enlarged view of the structure A shown in FIG. 1 according to the present invention;

FIG. 3 is a schematic side view of a vacuum drying chamber according to the present invention;

FIG. 4 is an enlarged view of the tilted lift configuration of the present invention;

FIG. 5 is a schematic view of another overall perspective structure of the present invention;

FIG. 6 is a schematic top perspective view of the coupling of the present invention;

fig. 7 is a schematic bottom perspective view of the present invention.

Description of reference numerals:

1. a vacuum drying chamber; 101. a first limit ring; 102. a second stop collar; 103. a feed pipe; 104. a leakage prevention valve; 105. sealing the cabin door; 106. a first side tube; 107. a first check valve; 108. a support hoop; 109. a second side tube; 1010. a second one-way valve; 1011. a heating layer; 2. a tilt elevation structure; 201. a coupling bearing ring; 202. a fixing hoop; 203. a bottom shaft; 204. an extension plate; 205. a hinged lever; 3. a hydraulic cylinder; 4. a refrigeration compressor; 401. a condenser tube; 402. an elastic hose; 403. an evaporator; 404. a drain pipe; 5. a support table; 6. a vacuum pump; 7. a control box; 8. vibrating sheets; 801. an ultrasonic transducer; 9. a base plate; 901. a discharge chute; 902. a drawer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 7, the present invention provides a technical solution: a lithium bis (trifluoromethyl) sulfonyl imide drying device comprises a vacuum drying cabin 1, wherein the outer curved side surface of the rear end of the vacuum drying cabin 1 is fixedly connected with a first limiting ring 101 through welding; a second limiting ring 102 is arranged behind the first limiting ring 101, and an inclined lifting structure 2 is arranged at the rear end of the vacuum drying cabin 1; the inclined lifting structure 2 comprises a bearing hoop 201, a fixed hoop 202 and a bottom shaft 203; the coupling 201 is arranged between the first limiting ring 101 and the second limiting ring 102 on the curved side surface at the rear end of the vacuum drying cabin 1;

the top of the bearing hoop 201 is fixedly connected with a fixed hoop 202 through a bolt, and the tail end of the side surface of the bottom of the bearing hoop 201 is fixedly connected with a bottom shaft 203; the number of the bottom shafts 203 is set to two groups; the inclined lifting structure 2 further comprises an extension plate 204 and a hinge rod 205; an extension plate 204 is arranged at the outer side of the bottom shaft 203 through hinge connection; the extension plates 204 are arranged in two groups in number; the top surface of the extension plate 204 is provided with a hinge rod 205 through hinge connection; the hinge levers 205 are provided in two groups in number; the top of the hinged rod 205 is fixed with the extension planes on the two sides of the coupling ring 201; the bottom of the extension plate 204 is fixedly connected with a hydraulic cylinder 3 through a bolt; the top of the telescopic part of the hydraulic cylinder 3 is fixed with the extension plate 204.

The top of the curved side surface of the vacuum drying chamber 1 is fixedly connected with a feeding pipe 103; an anti-leakage valve 104 is arranged in the feeding pipe 103 through flange connection; the front end of the vacuum drying cabin 1 is provided with a sealing cabin door 105 through hinge connection; a first side pipe 106 is fixedly connected to the left side of the curved side surface of the vacuum drying chamber 1; a first check valve 107 is arranged on the left side of the first side pipe 106 through flange connection; the outer curved side surface of the front end of the vacuum drying cabin 1 is provided with a support hoop 108 through a hoop connection; the right side of the curved side surface of the vacuum drying chamber 1 is fixedly connected with a second side pipe 109; the right side of the second side pipe 109 is provided with a second one-way valve 1010 through flange connection; the inner curved side surface of the vacuum drying chamber 1 is connected with a heating layer 1011 through interference fit; a heating resistance wire is arranged inside the heating layer 1011; the feeding pipe 103, the sealing cabin door 105, the first check valve 107, the second check valve 1010 and the heating layer 1011 form a lithium bis (trifluoromethyl) sulfonyl imide slurry receiving structure.

The hydraulic cylinders 3 are arranged in four groups; the right side of the first one-way valve 107 is connected with a refrigeration compressor 4 through a flexible pipeline; a condensing pipe 401 is fixedly connected to the left side of the first side pipe 106 in the vacuum drying chamber 1 through welding; the condensation pipe 401 is spirally wound on the outer curved side surface of the heating layer 1011; the condensation pipe 401 is positioned between the heating layer 1011 and the outer shell of the vacuum drying chamber 1; the tail end of the condensation pipe 401 is provided with an elastic hose 402 in an interference fit connection manner; the flexible hose 402 extends to the outside of the vacuum drying chamber 1; the elastic hose 402 is provided with an evaporator 403 in an interference fit connection; the side of the evaporator 403 is fixedly connected with a drain pipe 404; the refrigeration compressor 4, the condensation pipe 401 and the evaporator 403 constitute an in-cabin condensation structure.

The supporting table 5 is arranged at two sides of the supporting hoop 108 through hinge connection, and the bottom of the supporting table 5 is provided with a bottom plate 9; the bottom plate 9 is divided into two layers; a drawer 902 is arranged in the middle of the bottom plate 9 through sliding connection; a discharge chute 901 is arranged above the drawer 902; the bottom plate 9, the discharge chute 901 and the drawer 902 constitute a finished product collection structure.

Four groups of vertical wheels are arranged at the bottom of the supporting platform 5 through hinge connection, so that the use of movement adjustment is facilitated.

When the drying of the inside two trifluoromethyl sulfonyl imide lithium powder in vacuum drying cabin 1 is accomplished, through using control box 7, through the flexible operation of circuit control pneumatic cylinder 3, make the extension of 3 pars contractilis of pneumatic cylinder extend, through the pars contractilis lifting, make extension board 204 drive and hold the lifting of collar 201, thereby drive the lifting of vacuum drying cabin 1 afterbody through holding collar 201, connect extension board 204 through bottom axle 203, can make the free rotation of vacuum drying cabin 1 vertical direction when holding collar 201 and lifting, through the lifting of vacuum drying cabin 1 afterbody, make the horizontal migration backward of vacuum drying cabin 1 front end, through 5 bottom vertical wheels of articulated brace table in vacuum drying cabin 1 bottom roll, can make the quick backward migration of vacuum drying cabin 1 front end.

The dried lithium bis (trifluoromethyl) sulfonyl imide powder slides down from the vacuum drying cabin 1 through gravity by opening the sealing cabin door 105, so that the lithium bis (trifluoromethyl) sulfonyl imide powder slides down to the drawer 902 below the discharge chute 901 through the hatch, and a dried finished product can be conveniently and quickly collected.

Wherein, the right side of the second side pipe 109 is connected with a vacuum pump 6 through a pipeline; the rear side surface of the vacuum pump 6 is fixedly connected with a control box 7; the vacuum drying cabin 1, the vacuum pump 6 and the control box 7 form a vacuum decompression structure.

The bottom of the curved side surface of the vacuum drying chamber 1 is fixedly connected with a vibration piece 8; four groups of oscillating pieces 8 are arranged; the bottom of the oscillating plate 8 is fixedly connected with an ultrasonic transducer 801; the ultrasonic transducer 801 circuit is coupled with the control box 7 circuit; pneumatic cylinder 3 and refrigeration compressor 4 circuit and 7 circuit couplings of control box, through pressing 7 control buttons on the control box, make ultrasonic transducer 801 operation through the signal of telecommunication, through ultrasonic wave high frequency vibration, make and vibrate piece 8 and drive vacuum drying cabin 1 and shake, make the interior moisture of two trifluoromethyl sulfonyl imide lithium liquid in the drying process through vibrations, change the sublime efficiency of improvement two trifluoromethyl sulfonyl imide lithium ice crystals.

The working principle is as follows: when the device is used, a lithium bis (trifluoromethyl) sulfonyl imide mixed solution is input into the vacuum drying cabin 1 through the feeding pipe 103, the operation of the refrigeration compressor 4 is controlled through the control box 7 keys, refrigerant gas is compressed and then becomes high-temperature high-pressure gas through the operation of the refrigeration compressor 4, the refrigerant gas is wound through the condensation pipe 401 and passes through the outside of the heating layer 1011 in the vacuum drying cabin 1, heat is released to the air through the condensation pipe 401, the gaseous refrigerant is changed into liquid, the pressure and the flow of the refrigerant are adjusted through the expansion valve, the refrigerant is input into the refrigeration compressor 4 through the pipeline after being evaporated through the evaporator 403, so that the circulating refrigeration is realized, and the lithium bis (trifluoromethyl) sulfonyl imide mixed solution in the vacuum drying cabin 1 is rapidly frozen through the condensation pipe 401;

the operation of the vacuum pump 6 is controlled by a key of the control box 7, so that the internal air pressure of the vacuum drying cabin 1 is reduced, and the lithium bistrifluoromethylsulfonyl imide ice crystals inside are sublimated;

the heating layer 1011 is started by a key of the control box 7, so that the temperature of the heating layer 1011 is raised to thirty-five ℃, and heat for sublimation of ice crystals is continuously supplied, thereby realizing freeze drying;

when the drying of the lithium bis (trifluoromethyl) sulfonyl imide powder in the vacuum drying cabin 1 is finished, the control box 7 is used, the hydraulic cylinder 3 is controlled by the circuit to operate and stretch, the telescopic part of the hydraulic cylinder 3 is expanded and extended, the telescopic part is lifted, the extension plate 204 drives the bearing hoop 201 to lift, so that the tail part of the vacuum drying cabin 1 is driven to lift by the bearing hoop 201, the extension plate 204 is connected by the bottom shaft 203, the vacuum drying cabin 1 can freely rotate in the vertical direction when the bearing hoop 201 is lifted, the front end of the vacuum drying cabin 1 horizontally moves backwards by lifting the tail part of the vacuum drying cabin 1, the vertical wheel at the bottom of the supporting platform 5 hinged at the bottom of the vacuum drying cabin 1 rolls, the front end of the vacuum drying cabin 1 can rapidly move backwards, the dried lithium bis (trifluoromethyl) sulfonyl imide powder slides from the vacuum drying cabin 1 by gravity by opening the sealing cabin door 105, so that the lithium bis (trifluoromethyl) sulfonimide powder slides into a drawer 902 below a discharge chute 901 through a hatch, and a dried finished product can be conveniently and quickly collected.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.