CN113713429A - Lithium bis (trifluoromethyl) sulfonyl imide purification device - Google Patents
Lithium bis (trifluoromethyl) sulfonyl imide purification device Download PDFInfo
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- CN113713429A CN113713429A CN202111053230.0A CN202111053230A CN113713429A CN 113713429 A CN113713429 A CN 113713429A CN 202111053230 A CN202111053230 A CN 202111053230A CN 113713429 A CN113713429 A CN 113713429A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D15/00—Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
- B01D15/08—Selective adsorption, e.g. chromatography
- B01D15/10—Selective adsorption, e.g. chromatography characterised by constructional or operational features
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C303/00—Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides
- C07C303/42—Separation; Purification; Stabilisation; Use of additives
- C07C303/44—Separation; Purification
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention provides a lithium bis (trifluoromethyl) sulfonyl imide purification device which comprises a bearing box, wherein a rotating mechanism is arranged in the bearing box, a bearing rod is connected onto the rotating mechanism, a stirring tank is fixed at the upper end of the bearing rod, an auxiliary rotating mechanism is arranged at the lower end of the stirring tank, support frames are arranged on two sides of the bearing box, a fixed frame is fixed at the upper end of each support frame, a pushing mechanism is arranged on one side of each fixed frame, a second mounting plate is mounted on each pushing mechanism, and a first stirring mechanism is mounted on each second mounting plate. The invention not only can effectively improve the fusion degree of the lithium bis (trifluoromethyl) sulfonyl imide in the preparation, purification and purification, but also can reduce the mixing time of the lithium bis (trifluoromethyl) sulfonyl imide, effectively improve the speed of the preparation of the lithium bis (trifluoromethyl) sulfonyl imide and improve the quality of the preparation of the lithium bis (trifluoromethyl) sulfonyl imide.
Description
Technical Field
The invention belongs to the technical field of purification devices for chemical industry, and particularly relates to a lithium bis (trifluoromethyl) sulfonyl imide purification device.
Background
At present, in the preparation process of lithium bis (trifluoromethyl) sulfonyl imide, preliminary purification treatment is usually performed in advance, in the purification treatment, industrial zeolite needs to be selected and ground into powder, lithium salt and deionized water are added into the zeolite powder, the zeolite powder is heated to a reflux state under a stirring condition and kept for 3-6 hours, then the mixed solution is filtered, filter cakes obtained after filtration are washed by the deionized water, modified zeolite is obtained after washing, then the modified zeolite is dried under a decompression condition to obtain a metal ion adsorbent, and the metal ion adsorbent can be used for well realizing effective adsorption purification of metal ions in the lithium bis (trifluoromethyl) sulfonyl imide and completing the purification step.
However, in purification, the zeolite powder, the lithium salt and the deionized water need a long time for heating, stirring and mixing, the preparation speed of the lithium bis (trifluoromethyl) sulfonyl imide is greatly reduced, the production efficiency is reduced, the use cost of equipment is increased, meanwhile, the conventional stirring position is stirred for a long time, various raw materials cannot be fully fused, and the mixing quality and the fusion degree are reduced to a certain extent.
Therefore, we propose a purification device of lithium bis (trifluoromethyl) sulfonyl imide to solve the above problems.
Disclosure of Invention
The invention provides a lithium bis (trifluoromethyl) sulfonyl imide purification device to solve the problems in the background art.
In order to solve the technical problems, the invention adopts the technical scheme that: the purification device for the bis-trifluoromethyl sulfonyl imide lithium comprises a bearing box, wherein a rotating mechanism is arranged in the bearing box, a bearing rod is connected to the rotating mechanism, and a stirring tank is fixed at the upper end of the bearing rod;
the two sides of the bearing box are respectively provided with a support frame, a fixed frame is fixed at the upper end of each support frame, one side of each fixed frame is provided with a pushing mechanism, a second mounting plate is mounted on each pushing mechanism, a first stirring mechanism is mounted on each second mounting plate, a protection box is fixed at one side of the upper end of each fixed frame, each protection box is provided with a reciprocating adjusting mechanism, two first rotating arms are mounted on each reciprocating adjusting mechanism, a first mounting plate is fixed at one side of each first rotating arm, a second stirring mechanism is mounted on each first mounting plate, and the lower ends of the first stirring mechanism and the second stirring mechanism extend into the stirring tanks;
and a heating coil is installed on the other side of the upper end of the fixing frame, and the lower end of the heating coil extends into the stirring tank.
Furthermore, slewing mechanism includes reduction gears and second driving motor, reduction gears sets up in the bearing box, second driving motor installs in the lower extreme one side of bearing box, the output shaft of second driving motor runs through the lateral wall of bearing box and connects on reduction gears, the lower extreme of carrier bar rotates to cup joint on the upper end lateral wall of bearing box, the lower extreme of carrier bar is fixed on reduction gears.
Further, push mechanism includes pneumatic cylinder, dwang, slider and dead lever, the fixed suit of pneumatic cylinder is in one side of fixed frame, the piston rod end of pneumatic cylinder is fixed with the mounting, it is connected with two dwangs to rotate on the mounting, all be equipped with the spout on the relative lateral wall in the fixed frame, install two sliders in the spout, and connect through the dead lever between two sliders with one side, the one end of two dwangs is rotated respectively and is connected in one side of two sliders wherein, and the both ends at the second mounting panel are fixed jointly to relative one side of two other sliders.
Furthermore, the reciprocating adjusting mechanism comprises two first gears which are rotatably connected between the opposite side walls in the protective box, and the two first gears are meshed with each other;
the protection box is characterized in that a servo motor is fixed on one side of the upper end of the protection box, an output shaft of the servo motor extends into the protection box, a second gear is fixed at the tail end of the output shaft of the servo motor, and one end of the second gear is meshed with one first gear.
Furthermore, the both sides of protection box all are equipped with the opening, the upper end of first gear is fixed with the second rotor arm, and a second rotor arm of homonymy runs through the opening of homonymy and extends to the one end of protection box, one side of protection box is fixed with the installation piece, it is connected with two connecting rods to rotate on the installation piece, and a connecting rod and a second rotor arm of homonymy rotate and connect in one side of a first rotor arm.
Further, first rabbling mechanism is including fixing the third driving motor on the second mounting panel, third driving motor's output shaft end is connected with the second puddler through the shaft coupling, the periphery of second puddler is equidistant to be fixed with a plurality of first stirring leaves, the lower extreme of second puddler extends to in the agitator tank.
Further, second rabbling mechanism is including fixing the first driving motor on first mounting panel, there is first puddler first driving motor's output shaft end through the coupling joint, the periphery of first puddler is equidistant to be fixed with a plurality of second stirring leaves, the lower extreme of first puddler extends to in the agitator tank.
Furthermore, the auxiliary rotating mechanism comprises three moving blocks fixed at the lower end of the stirring tank, a sliding rail is fixed at the upper end of the bearing box, and the three moving blocks are respectively installed on the sliding rail.
Furthermore, one side of the lower end of the stirring tank is connected with a discharge pipe, and a valve is arranged on the discharge pipe.
Furthermore, support columns are fixed to four corners of the lower end of the bearing box, and cushion blocks are fixed to the lower ends of the support columns.
Compared with the prior art, the invention has the following advantages:
according to the invention, through the combination of the two stirring mechanisms and the autorotation of the stirring tank, the stirring and mixing efficiency is greatly improved, the stirring time is reduced, and through the height setting and the staggered setting of the two stirring mechanisms, the liquids with different heights and different densities can be fully stirred, the quality of mixing is ensured to ensure that the two stirring mechanisms perform reciprocating adjustment movement while stirring through the adjusting mechanisms, the stirring area and range are greatly expanded, the stirring efficiency is further improved, and the stirring effect is enhanced; the invention not only can effectively improve the fusion degree of the lithium bis (trifluoromethyl) sulfonyl imide in the preparation, purification and purification, but also can reduce the mixing time of the lithium bis (trifluoromethyl) sulfonyl imide, effectively improve the speed of the preparation of the lithium bis (trifluoromethyl) sulfonyl imide and improve the quality of the preparation of the lithium bis (trifluoromethyl) sulfonyl imide.
Drawings
FIG. 1 is a schematic view of the internal structure of the overall structure of the present invention;
FIG. 2 is an external view of the overall structure of the present invention;
FIG. 3 is a top view of the overall structure of the present invention;
FIG. 4 is a schematic structural diagram of a pushing mechanism in an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a reciprocating adjustment mechanism in an embodiment of the present invention;
FIG. 6 is a schematic view of a fixing frame structure according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of an auxiliary rotating mechanism in the embodiment of the invention.
In the figure: the automatic stirring device comprises a hydraulic cylinder 1, a servo motor 2, a first stirring rod 3, a protection box 4, a fixing frame 5, a speed reducing mechanism 6, a second driving motor 7, a first driving motor 8, a third driving motor 9, a heating coil 10, a second stirring rod 11, a first stirring blade 12, a supporting frame 13, a stirring tank 14, a moving block 15, a bearing box 16, a supporting leg 17, a material discharging pipe 18, a sliding rail 19, a sliding groove 20, a first rotating arm 21, a connecting rod 22, a second rotating arm 23, a rotating rod 24, a first mounting plate 25, a sliding block 26, a fixing rod 27, a second mounting plate 28, a mounting block 29, a notch 30, a first gear 31 and a second gear 32.
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 obtained by a person skilled in the art based on the embodiments in the present invention without any creative efforts shall fall within the protection scope of the present invention.
As shown in fig. 1 to 7, the present invention provides a technical solution: the utility model provides a two trifluoromethyl sulfonyl imide lithium purify device, including bearing box 16, be equipped with slewing mechanism in the bearing box 16, slewing mechanism is including setting up the reduction gears 6 in the bearing box 16, second driving motor 7 is installed to lower extreme one side of bearing box 16, the output shaft of second driving motor 7 runs through the lateral wall of bearing box 16 and connects on reduction gears 6, the lower extreme of carrier bar rotates and cup joints on the upper end lateral wall of bearing box 16, the lower extreme of carrier bar is fixed on reduction gears 6, second driving motor 7 adopts 12 utmost points 55 KW's large-scale motor, adopt intermittent cycle work system, stop work 10 minutes after agitator tank 14 is rotatory 30 minutes, later restart.
Be connected with the carrier bar on the slewing mechanism, the upper end of carrier bar is fixed with agitator tank 14, the lower extreme of agitator tank 14 is equipped with supplementary slewing mechanism, supplementary slewing mechanism is including fixing three movable block 15 at agitator tank 14 lower extreme, the upper end of carrier tank 16 is fixed with slide rail 19, and three movable block 15 installs on slide rail 19, lower extreme one side of agitator tank 14 is connected with row material pipe 18, it is equipped with the valve on the material pipe 18 to arrange, the lower extreme four corners of carrier tank 16 all is fixed with support column 17, the lower extreme of support column 17 is fixed with the cushion, carry out the outrigger to carrier tank 16, guarantee the stability of agitator tank 14 when the rotation simultaneously.
The two sides of the bearing box 16 are respectively provided with a support frame 13, the upper end of the support frame 13 is fixed with a fixed frame 5, two sides of the fixed frame 5 are welded with fixed blocks, the fixed blocks are used for being firmly connected with the support frame 13 at the lower end, one side of the fixed frame 5 is provided with a pushing mechanism, the pushing mechanism comprises a hydraulic cylinder 1 fixedly sleeved at one side of the fixed frame 5, the tail end of a piston rod of the hydraulic cylinder 1 is fixed with a fixed part, the fixed part is rotatably connected with two rotating rods 24, opposite side walls in the fixed frame 5 are respectively provided with a sliding groove 20, two sliding blocks 26 are arranged in the sliding grooves 20, the two sliding blocks 26 at the same side are connected through a fixed rod 27, one end of each of the two rotating rods 24 is respectively rotatably connected at one side of the two sliding blocks 26, the opposite sides of the other two sliding blocks 26 are jointly fixed at two ends of a second mounting plate 28, the hydraulic cylinder 1 adopts a high-pressure single-piston rod servo hydraulic cylinder with a cylinder length of 4m, a rod length of 1.7m and a stroke of 2m, the second mounting plate 28 can be driven to stably reciprocate within the stroke set by the system.
Install second mounting panel 28 on the push mechanism, install first rabbling mechanism on the second mounting panel 28, the upper end one side of fixed frame 5 is fixed with protection box 4, and protection box 4 is equipped with reciprocating adjusting mechanism, and reciprocating adjusting mechanism is including rotating two first gears 31 of connection between the relative lateral wall in protection box 4, and two first gears 31 intermeshing, and upper end one side of protection box 4 is fixed with servo motor 2.
The power of the servo motor 2 is 50W-1000W, the voltage is 12V-48V, the servo motor 2 converts an input voltage signal into an axial angular displacement or angular velocity output, the output is positively rotated or reversely rotated through the setting of an automatic control system, the output shaft of the servo motor 2 is reversely rotated after 10-20 circles of positive rotation are operated, the output shaft of the servo motor 2 penetrates through the side wall of the protection box 4 and extends into the protection box 4, the tail end of the output shaft of the servo motor 2 is fixedly provided with a second gear 32, one end of the second gear 32 is meshed with one of the first gears 31, both sides of the protection box 4 are provided with notches 30, the upper end of the first gear 31 is fixedly provided with a second rotating arm 23, one second rotating arm 23 on the same side penetrates through one notch 30 on the same side and extends to one end of the protection box 4, one side of the protection box 4 is fixedly provided with a mounting block 29, and the mounting block 29 is rotatably connected with two connecting rods 22, and a connecting rod 22 and a second rotating arm 23 on the same side are rotatably connected to one side of a first rotating arm 21, and the rotating amplitude of the first rotating arm 21 is limited by the rotation of the connecting rod 22, so that the first rotating arm 21 can be driven to reciprocate and swing on two sides of the fixed frame 5.
Two first rotating arms 21 are installed on the reciprocating adjusting mechanism, the first rotating arms 21 are made of carbon steel, and the stability and firmness of the support can be effectively improved.
A first mounting plate 25 is fixed on one side of the first rotating arm 21, a second stirring mechanism is mounted on the first mounting plate 25, the lower ends of the first stirring mechanism and the second stirring mechanism extend into the stirring tank 14, a heating coil 10 is mounted on the other side of the upper end of the fixing frame 5, the lower end of the heating coil 10 extends into the stirring tank 14, the first stirring mechanism and the second stirring mechanism are arranged in a staggered mode, mixed liquid in different positions, different heights and different areas can be fully stirred, the existing purification time is 3-5 hours, and the stirring time can be controlled to be 1-2 hours through the arrangement of the mechanism.
First rabbling mechanism is including fixing third driving motor 9 on second mounting panel 28, the output shaft end of third driving motor 9 is connected with second puddler 11 through the shaft coupling, the equidistant a plurality of first stirring leaves 13 that are fixed with of a week of second puddler 11, the lower extreme of second puddler 11 extends to in the agitator tank 14, the rotation direction of second puddler 11 and agitator tank 14's rotation opposite direction, third driving motor 9 and first drive power supply machine 8 all adopt the motor of 6 utmost points 35kw, can drive the stable continuous rotation of rabbling mechanism.
The second rabbling mechanism is including fixing first driving motor 8 on first mounting panel 25, and there is first puddler 3 at first driving motor 8's output shaft end through the coupling joint, and the equidistant a plurality of second stirring leaves that are fixed with of a week of first puddler 3, and in the lower extreme of first puddler 3 extended to agitator tank 14, the rotation of first puddler 3 was reverse and agitator tank 14's rotation opposite direction.
In this embodiment, the industrial zeolite is selected from clinoptilolite, mordenite, analcime, and chabazite, the lithium salt is selected from lithium chloride, lithium carbonate, lithium hydroxide, lithium oxide, lithium fluoride, and lithium oxalate, the mass ratio of the lithium salt to the zeolite powder is 1:5, and the heating temperature of the heating coil 10 is 30-65 ℃.
In this example, when purification of lithium bis (trifluoromethyl sulfonyl imide) preparation is required, mordenite powder and lithium fluoride and deionized water are mixed in advance in a ratio of 1: adding the mixture into a stirring tank 14 according to the proportion of 1:5, starting a heating coil 10, setting the temperature of the heating coil 10 at 50 ℃, and starting a servo motor 2 and corresponding drive motors;
the second driving motor 7 drives the speed reducing mechanism 6 to rotate through the rotation of the output shaft, so that the stirring tank 14 rotates, the second driving motor 7 rotates for 30 minutes, automatically stops for 10 minutes, then continues to rotate, the moving block 15 at the lower end stably limits the position when the stirring tank 14 rotates, and the hydraulic cylinder 1 is set on the console to move back and forth;
the hydraulic cylinder 1 drives the rotating rod 24, the sliding block 26 and the first stirring mechanism to reciprocate in the fixed frame 5 through the extension and contraction of the piston rod, and the uninterrupted reciprocating movement of the hydraulic cylinder 1 is set for 1-2 hours;
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.
Claims (10)
1. A purification device for bis (trifluoromethyl) sulfonyl imide lithium is characterized in that: the stirring device comprises a bearing box (16), wherein a rotating mechanism is arranged in the bearing box (16), a bearing rod is connected to the rotating mechanism, and a stirring tank (14) is fixed at the upper end of the bearing rod;
the improved stirring device is characterized in that support frames (13) are arranged on two sides of the bearing box (16), a fixed frame (5) is fixed to the upper end of the support frame (13), a pushing mechanism is arranged on one side of the fixed frame (5), a second mounting plate (28) is mounted on the pushing mechanism, a first stirring mechanism is mounted on the second mounting plate (28), a protection box (4) is fixed to one side of the upper end of the fixed frame (5), a reciprocating adjusting mechanism is arranged on the protection box (4), two first rotating arms (21) are mounted on the reciprocating adjusting mechanism, a first mounting plate (25) is fixed to one side of each first rotating arm (21), a second stirring mechanism is mounted on the first mounting plate (25), and the lower ends of the first stirring mechanism and the second stirring mechanism extend into a stirring tank (14);
heating coil (10) are installed to the upper end opposite side of fixed frame (5), the lower extreme of heating coil (10) extends to in agitator tank (14).
2. The purification device of lithium bis (trifluoromethylsulfonyl) imide according to claim 1, wherein the rotating mechanism comprises a speed reduction mechanism (6) and a second driving motor (7), the speed reduction mechanism (6) is disposed in the carrying box (16), the second driving motor (7) is installed at one side of the lower end of the carrying box (16), the output shaft of the second driving motor (7) penetrates through the side wall of the carrying box (16) and is connected to the speed reduction mechanism (6), the lower end of the carrying rod is rotatably sleeved on the side wall of the upper end of the carrying box (16), and the lower end of the carrying rod is fixed on the speed reduction mechanism (6).
3. The lithium bis (trifluoromethylsulfonyl) imide purification apparatus as claimed in claim 1, it is characterized in that the pushing mechanism comprises a hydraulic cylinder (1), a rotating rod (24), a sliding block (26) and a fixed rod (27), the hydraulic cylinder (1) is fixedly sleeved on one side of the fixed frame (5), a fixing piece is fixed at the tail end of a piston rod of the hydraulic cylinder (1), the fixed part is rotatably connected with two rotating rods (24), the opposite side walls in the fixed frame (5) are respectively provided with a sliding groove (20), two sliding blocks (26) are arranged in the sliding grooves (20), and the two sliding blocks (26) on the same side are connected through a fixed rod (27), one end of each of the two rotating rods (24) is respectively and rotatably connected with one side of each of the two sliding blocks (26), the other two sliding blocks (26) are fixed at two ends of the second mounting plate (28) together at the opposite sides.
4. The lithium bis (trifluoromethylsulfonyl) imide purification apparatus as claimed in claim 1, wherein the reciprocal adjustment mechanism comprises two first gears (31) rotatably connected between the opposite sidewalls in the protection box (4), and the two first gears (31) are engaged with each other;
the protection box is characterized in that a servo motor (2) is fixed on one side of the upper end of the protection box (4), an output shaft of the servo motor (2) extends into the protection box (4), a second gear (32) is fixed at the tail end of the output shaft of the servo motor (2), and one end of the second gear (32) is meshed with one first gear (31).
5. The purification device of lithium bis (trifluoromethylsulfonyl) imide according to claim 4, wherein the two sides of the protection box (4) are respectively provided with a notch (30), the upper end of the first gear (31) is fixed with a second rotating arm (23), one second rotating arm (23) on the same side penetrates through the notch (30) on the same side and extends to one end of the protection box (4), one side of the protection box (4) is fixed with a mounting block (29), the mounting block (29) is rotatably connected with two connecting rods (22), and one connecting rod (22) and one second rotating arm (23) on the same side are rotatably connected to one side of one first rotating arm (21).
6. The purification device of lithium bis (trifluoromethylsulfonyl) imide according to claim 1, wherein the first stirring mechanism comprises a third driving motor (9) fixed on the second mounting plate (28), the end of the output shaft of the third driving motor (9) is connected with a second stirring rod (11) through a coupling, the periphery of the second stirring rod (11) is fixed with a plurality of first stirring blades (13) at equal intervals, and the lower end of the second stirring rod (11) extends into the stirring tank (14).
7. The purification device of lithium bis (trifluoromethylsulfonyl) imide according to claim 1, wherein the second stirring mechanism comprises a first driving motor (8) fixed on the first mounting plate (25), the end of the output shaft of the first driving motor (8) is connected with a first stirring rod (3) through a coupling, a plurality of second stirring blades are fixed on the periphery of the first stirring rod (3) at equal intervals, and the lower end of the first stirring rod (3) extends into the stirring tank (14).
8. The lithium bis (trifluoromethyl) sulfonimide purification device according to claim 1, wherein the auxiliary rotation mechanism comprises three moving blocks (15) fixed at the lower end of the stirring tank (14), a slide rail (19) is fixed at the upper end of the bearing box (16), and the three moving blocks (15) are respectively installed on the slide rail (19).
9. The lithium bis (trifluoromethylsulfonyl) imide purification apparatus as claimed in claim 1, wherein a discharge pipe (18) is connected to one side of the lower end of the stirring tank (14), and a valve is disposed on the discharge pipe (18).
10. The lithium bis (trifluoromethyl) sulfonimide purification device according to claim 1, wherein support columns (17) are fixed at four corners of the lower end of the carrying box (16), and cushion blocks are fixed at the lower ends of the support columns (17).
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| CN213160504U (en) * | 2020-06-29 | 2021-05-11 | 盐城名杰纸品包装有限公司 | Compounding device is used in paper production |
| CN213726092U (en) * | 2020-09-11 | 2021-07-20 | 天津德普威涂料有限公司 | Dispersion agitator tank of coating |
| CN112023779A (en) * | 2020-09-20 | 2020-12-04 | 谢森涛 | Glue rapid mixing equipment for shoe industry |
| CN112588181A (en) * | 2020-11-24 | 2021-04-02 | 安徽桑瑞斯环保新材料有限公司 | Multistage agitating unit of production powder coating |
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| CN113713429B (en) | 2022-05-20 |
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Address after: 057550 No. five Weir Road, chemical industry gathering area, Feixiang District, Handan, Hebei, 1 Applicant after: China shipbuilding (Handan) Perry Special Gas Co.,Ltd. Address before: 057550 No. five Weir Road, chemical industry gathering area, Feixiang District, Handan, Hebei, 1 Applicant before: PERIC SPECIAL GASES Co.,Ltd. |
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