CN220111048U - Reaction extraction device - Google Patents
Reaction extraction device Download PDFInfo
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- CN220111048U CN220111048U CN202320484342.XU CN202320484342U CN220111048U CN 220111048 U CN220111048 U CN 220111048U CN 202320484342 U CN202320484342 U CN 202320484342U CN 220111048 U CN220111048 U CN 220111048U
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 59
- 238000000605 extraction Methods 0.000 title claims abstract description 29
- 238000003756 stirring Methods 0.000 claims abstract description 36
- 230000007246 mechanism Effects 0.000 claims abstract description 25
- 239000007788 liquid Substances 0.000 claims abstract description 21
- 238000007599 discharging Methods 0.000 claims description 7
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 238000003786 synthesis reaction Methods 0.000 abstract description 18
- 230000015572 biosynthetic process Effects 0.000 abstract description 13
- 239000002994 raw material Substances 0.000 abstract description 3
- 239000012535 impurity Substances 0.000 abstract description 2
- 238000002156 mixing Methods 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 abstract 5
- 235000017491 Bambusa tulda Nutrition 0.000 abstract 5
- 241001330002 Bambuseae Species 0.000 abstract 5
- 235000015334 Phyllostachys viridis Nutrition 0.000 abstract 5
- 239000011425 bamboo Substances 0.000 abstract 5
- 238000011068 loading method Methods 0.000 abstract 1
- 239000005416 organic matter Substances 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 239000000126 substance Substances 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- NAQMVNRVTILPCV-UHFFFAOYSA-N hexane-1,6-diamine Chemical compound NCCCCCCN NAQMVNRVTILPCV-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000638 solvent extraction Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229920002302 Nylon 6,6 Polymers 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000000622 liquid--liquid extraction Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The utility model belongs to the technical field of organic synthesis, and particularly relates to a reaction extraction device which comprises a base, wherein a movable supporting mechanism is arranged above the base, and a reaction extraction executing mechanism is arranged on the inner side of the movable supporting mechanism. Stirring leaf and (mixing) shaft cooperation in sealed reaction section of thick bamboo carry out abundant effectual stirring synthesis to the composition, set up unloading pipe and tube cap cooperation, avoid the raw materials to spill, the backup pad filter screen can prevent impurity, fall into the graduated flask, the first ball that sets up and first ball nut platform rotary motion drive second connection loading board and graduated flask back-and-forth movement, the second ball that sets up and second ball nut platform rotary motion drive reaction section of thick bamboo reciprocates, reaction section of thick bamboo below separating funnel and drain section of thick bamboo and graduated flask combine closely, can carry out the synthesis of organic matter, also can extract, combine synthesis and extraction together, need not separate the operation, can automatically regulated reaction section of thick bamboo's height, the graduated flask of different co-altitude of being convenient for collects liquid.
Description
Technical Field
The utility model belongs to the technical field of organic synthesis, and particularly relates to a reaction extraction device.
Background
Organic synthesis refers to the process of chemically making simple substances, simple inorganic substances or simple organic substances into relatively complex organic substances. For example, methanol is produced from hydrogen and carbon dioxide; vinyl chloride is prepared from acetylene, and then the vinyl chloride resin is obtained through polymerization; adipic acid and hexamethylenediamine are produced from phenol by a series of reactions, which are recondensed to form polyamide 66 fibers. Extraction, also known as solvent extraction or liquid-liquid extraction, is a unit operation that utilizes the differential solubility of components of the system in a solvent to separate a mixture. Is a method of transferring a solute substance from one solvent to another by utilizing the difference in solubility or partition coefficient of the substance in two solvents which are mutually insoluble (or slightly soluble).
Through searching, the Chinese patent application document with the Chinese patent application number of CN202122413070.8 discloses an organic synthesis extraction all-in-one machine, which comprises a workbench, wherein the top of the workbench is provided with a conical groove, a synthesis cylinder is arranged on the conical groove, two sides of the synthesis cylinder are provided with synthesis cylinder rubber fixing parts, four corners of the top of the workbench are provided with spring storage cylinders, torsion springs are arranged in the spring storage cylinders, the tops of the torsion springs are connected with connecting rods, a top plate is arranged at the top of the connecting rods, a bearing is arranged in the middle of the top plate, and a stirring rod is arranged in the bearing.
In the above-mentioned related art, the height of the top plate is adjusted by the torsion spring, but the continuous pressing is required during the reaction, so that the effective sealing of the synthetic cylinder during the operation cannot be implemented, the crank is matched with the stirring rod, the sufficient fusion during the synthesis of the organic matters cannot be ensured, and the measuring cylinder cannot be effectively taken out, so that the design of a reaction extraction device is needed to solve the problems.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model discloses a reaction extraction device.
The utility model realizes the above purpose through the following technical scheme:
the reaction extraction device comprises a base, a movable supporting mechanism is arranged above the base, and a reaction extraction executing mechanism is arranged on the inner side of the movable supporting mechanism.
The reaction extraction actuating mechanism comprises a measuring cylinder bearing plate table fixedly arranged above the movable supporting mechanism, a measuring cylinder is vertically and fixedly arranged above the measuring cylinder bearing plate table, a liquid guide cylinder is arranged above the measuring cylinder, a separating funnel is arranged above the liquid guide cylinder, a reaction cylinder is fixedly arranged above the separating funnel, a stirring shaft is vertically and rotatably connected in the reaction cylinder, stirring blades are fixedly arranged on the outer surface of the stirring shaft, a supporting plate filter screen is arranged between the separating funnel and the stirring shaft, one end of the stirring shaft is fixedly connected with the power output end of a variable frequency motor, blanking pipes are arranged on two sides of the variable frequency motor and are fixedly arranged on the top end of the reaction cylinder, and a pipe cover is connected above the blanking pipes.
Preferably, the movable supporting mechanism comprises supporting end plates fixedly arranged at two ends above the base, a first ball screw supporting frame is fixedly arranged at the front side and the rear side below opposite surfaces of the supporting end plates, a first ball screw is rotatably arranged in the first ball screw supporting frame, a first ball screw nut table is movably connected to the outer surface of the first ball screw, one end of the first ball screw is fixedly connected to a power output end of a first motor, a second connecting bearing plate is fixedly arranged on opposite surfaces of the first ball screw nut table, a supporting transverse plate is longitudinally arranged above the first ball screw nut table, a second ball screw is vertically and rotatably arranged above the supporting transverse plate, one end of the second ball screw is fixedly arranged at the power output end of the second motor, a second ball screw nut table is movably arranged on the outer surface of the second ball screw, and a first connecting bearing plate is fixedly arranged on opposite surfaces of the second ball screw nut table.
Preferably, the measuring cylinder bearing plate table is welded with the measuring cylinder, the separating funnel is welded with the reaction cylinder, and three groups of T-shaped bosses are longitudinally and equidistantly arranged below the measuring cylinder bearing plate table.
Preferably, the reaction cylinder is connected with the stirring shaft through a bearing, the stirring shaft is connected with the variable frequency motor through a coupling, and the discharging pipe is connected with the pipe cover through threads.
Preferably, the first ball screw support frame is connected with the first ball screw through a bearing, and the first ball screw is connected with the first motor through a coupler.
Preferably, the supporting transverse plate is connected with the second ball screw through a bearing, the second ball screw is connected with the second motor through a coupler, and three groups of grooves are longitudinally and equidistantly arranged above the second connecting bearing plate.
The beneficial effects are that:
the utility model discloses a reaction extraction device, which is characterized in that organic matters are effectively synthesized through a movable supporting mechanism and a reaction extraction executing mechanism, the organic matters are sufficiently and effectively stirred and synthesized through the matching of stirring blades and stirring shafts arranged in a sealed reaction cylinder, a discharging pipe and a pipe cover are arranged to be matched, the organic matters are effectively prevented from being sprayed out of the reaction cylinder, a supporting plate filter screen can effectively prevent impurities generated in the organic matters synthesis from falling into a measuring cylinder, pollution is avoided, a first ball screw and a first ball screw nut table are arranged to be moved in a rotating way to drive a second connection bearing plate and the measuring cylinder to be moved back and forth, a second ball screw and a second ball screw nut table are arranged to be moved in a rotating way to drive the reaction cylinder to be moved up and down, a separating funnel arranged below the reaction cylinder is tightly combined with a liquid guiding cylinder and the measuring cylinder, the organic matters can be effectively prevented from being sprayed out of the measuring cylinder, the organic matters can be synthesized, the synthesis and the extraction can be combined together, the organic matters are not required to be separated, the operation is simple and convenient, the operation can be carried out, the mixing efficiency can be improved, the liquid collection cylinder with different heights can be adjusted automatically, and the liquid collection cylinder can be convenient to collect liquid.
Drawings
FIG. 1 is a schematic illustration of an isometric shaft configuration of the present utility model;
FIG. 2 is a schematic elevational view of the present utility model;
FIG. 3 is a first structural schematic of the present utility model;
FIG. 4 is a second schematic structural view of the present utility model;
FIG. 5 is a third structural schematic of the present utility model;
fig. 6 is a partial schematic view at a in fig. 5.
In the figure: 1. a base;
2. a movable support mechanism; 201. a support end plate; 202. a first ball screw support frame; 203. a first ball screw; 204. a first motor; 205. a first ball screw nut table; 206. a second ball screw; 207. a second motor; 208. a second ball screw nut table; 209. a supporting cross plate; 210. a first connection carrier plate; 211. a second connecting bearing plate;
3. a reaction extraction executing mechanism; 301. a measuring cylinder bearing plate table; 302. a measuring cylinder; 303. a liquid guide cylinder; 304. a separating funnel; 305. a reaction cylinder; 306. stirring the leaves; 307. a stirring shaft; 308. a variable frequency motor; 309. discharging pipes; 310. a tube cover; 311. and a support plate filter screen.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in the specific direction, and thus should not be construed as limiting the present utility model; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1-6, one embodiment provided by the present utility model is: the reaction extraction device comprises a base 1, a movable supporting mechanism 2 is arranged above the base 1, and a reaction extraction executing mechanism 3 is arranged on the inner side of the movable supporting mechanism 2.
In this embodiment: the movable supporting mechanism 2 comprises supporting end plates 201 fixedly arranged at two ends above the base 1, a first ball screw supporting frame 202 is fixedly arranged at the front side and the rear side below opposite surfaces of the supporting end plates 201, a first ball screw 203 is rotatably arranged on the first ball screw supporting frame 202, a first ball screw nut table 205 is movably connected to the outer surface of the first ball screw 203, one end of the first ball screw 203 is fixedly connected to a power output end of a first motor 204, a second connecting bearing plate 211 is fixedly arranged on the opposite surfaces of the first ball screw nut table 205, a supporting transverse plate 209 is longitudinally arranged above the first ball screw nut table 205, a second ball screw 206 is vertically and rotatably arranged above the supporting transverse plate 209, one end of the second ball screw 206 is fixedly arranged at the power output end of the second motor 207, a second ball screw nut table 208 is movably arranged on the outer surface of the second ball screw 206, and a first connecting bearing plate 210 is fixedly arranged on the opposite surfaces of the second ball screw nut table 208. The first ball screw support 202 is connected with the first ball screw 203 through a bearing, and the first ball screw 203 is connected with the first motor 204 through a coupling. The supporting transverse plate 209 is connected with the second ball screw 206 through a bearing, the second ball screw 206 is connected with the second motor 207 through a coupler, and three groups of grooves are longitudinally and equidistantly arranged above the second connecting bearing plate 211. The first ball screw 203 and the first ball screw nut table 205 are used for driving the second connection bearing plate 211 to move back and forth, and the second ball screw 206 and the second ball screw nut table 208 are used for driving the first connection bearing plate 210 to move up and down.
In this embodiment: the reaction extraction actuating mechanism 3 comprises a measuring cylinder bearing plate platform 301 fixedly arranged above the movable supporting mechanism 2, a measuring cylinder 302 is vertically and fixedly arranged above the measuring cylinder bearing plate platform 301, a liquid guide cylinder 303 is arranged above the measuring cylinder 302, a separating funnel 304 is arranged above the liquid guide cylinder 303, a reaction cylinder 305 is fixedly arranged above the separating funnel 304, a stirring shaft 307 is vertically and rotatably connected in the reaction cylinder 305, stirring blades 306 are fixedly arranged on the outer surface of the stirring shaft 307, a supporting plate filter screen 311 is arranged between the separating funnel 304 and the stirring shaft 307, one end of the stirring shaft 307 is fixedly connected with the power output end of a variable frequency motor 308, blanking pipes 309 are arranged on two sides of the variable frequency motor 308, the top end of the reaction cylinder 305 is fixedly arranged, and a pipe cover 310 is connected above the blanking pipes 309. The measuring cylinder bearing plate 301 is welded with the measuring cylinder 302, the separating funnel 304 is welded with the reaction cylinder 305, and three groups of T-shaped bosses are longitudinally and equidistantly arranged below the measuring cylinder bearing plate 301. The reaction cylinder 305 is connected with the stirring shaft 307 through a bearing, the stirring shaft 307 is connected with the variable frequency motor 308 through a coupling, and the discharging pipe 309 is connected with the pipe cover 310 through threads. The measuring cylinder 302 is used for measuring the capacity of the synthesized organic matters, the reaction cylinder 305 is used for the synthesis reaction of the raw materials, and the stirring shaft 307 drives the stirring blades 306 to stir the raw materials.
Working principle: when in use, firstly, a plurality of liquids to be synthesized are poured into the reaction cylinder 305 through the discharging pipe 309, the discharging pipe 309 is sealed through the pipe cover 310 through threads, meanwhile, the synthesized liquids are in the reaction cylinder 305, at the moment, the variable frequency motor 308 is started, the stirring shaft 307 and the stirring blade 306 are driven to rotate together to stir the liquids in the reaction cylinder 305, the synthesis efficiency is improved, the first motor 204 is started to drive the first ball screw 203 to rotate, the first ball screw nut table 205 is driven to move back and forth, the second connection bearing plate 211 and the upper measuring cylinder 302 are driven to move back and forth, the equivalent cylinder 302 is stopped when moving to the lower part of the separating funnel 304, meanwhile, the second motor 207 is started to drive the second ball screw 206 to rotate, the second ball screw nut table 208 drives the reaction cylinder 305 to move up and down, when the separating funnel 304 is driven to descend to the upper part of the liquid guiding cylinder 303 by the reaction cylinder 305, after the synthesis is completed, a hand valve on the separating funnel 304 is opened, liquid in the reaction cylinder 305 enters the separating funnel 304 through the supporting plate filter screen 311 to be separated, after the liquid separation is completed, the liquid at the bottom layer of the separating funnel 304 is conveyed into the measuring cylinder 302 to be stored, the reaction cylinder 305 is driven to move up and down through the second ball screw nut table 208, the measuring cylinders 302 with different heights are convenient to collect the liquid, three groups of T-shaped bosses longitudinally equidistant below the measuring cylinder bearing plate table 301 are movably connected with three groups of grooves longitudinally equidistant above the second connecting bearing plate 211, when the measuring cylinder 302 is required to be taken out of the device, handles arranged at two ends above the measuring cylinder bearing plate table 301 can be used for taking out the measuring cylinder bearing plate table 301 together with the measuring cylinder 302 through the movable fit of the T-shaped bosses and the grooves, the device combines the synthesis and the extraction, the operation is not needed to be separated, the operation is simple and convenient, the synthesis efficiency is improved by stirring, the height of the reaction cylinder 305 can be automatically adjusted, the measuring cylinders 302 with different heights are convenient to collect liquid, and the operation is convenient for personnel.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.
Claims (6)
1. A reaction extraction device, which is characterized in that: the device comprises a base (1), wherein a movable supporting mechanism (2) is arranged above the base (1), and a reaction extraction executing mechanism (3) is arranged on the inner side of the movable supporting mechanism (2);
the reaction extraction actuating mechanism (3) comprises a measuring cylinder bearing plate table (301) fixedly arranged above the movable supporting mechanism (2), a measuring cylinder (302) is vertically and fixedly arranged above the measuring cylinder bearing plate table (301), a liquid guide cylinder (303) is arranged above the measuring cylinder (302), a separating funnel (304) is arranged above the liquid guide cylinder (303), a reaction cylinder (305) is fixedly arranged above the separating funnel (304), a stirring shaft (307) is vertically and rotatably connected in the reaction cylinder (305), stirring blades (306) are fixedly arranged on the outer surface of the stirring shaft (307), a supporting plate filter screen (311) is arranged between the separating funnel (304) and the stirring shaft (307), one end of the stirring shaft (307) is fixedly connected with the power output end of a variable frequency motor (308), two sides of the variable frequency motor (308) are respectively provided with a blanking pipe (309), the top end of the reaction cylinder (305) is fixedly arranged, and a pipe cover (310) is connected above the blanking pipe (309).
2. A reaction extraction apparatus according to claim 1, wherein: the movable supporting mechanism (2) comprises supporting end plates (201) fixedly arranged at two ends above the base (1), a first ball screw supporting frame (202) is fixedly arranged at the front side and the rear side below opposite surfaces of the supporting end plates (201), a first ball screw (203) is rotatably arranged in the first ball screw supporting frame (202), a first ball screw nut table (205) is movably connected to the outer surface of the first ball screw (203), one end of the first ball screw (203) is fixedly connected to the power output end of a first motor (204), a second connecting bearing plate (211) is fixedly arranged on the opposite surfaces of the first ball screw nut table (205), a supporting transverse plate (209) is longitudinally arranged above the first ball screw nut table (205), a second ball screw (206) is vertically arranged above the supporting transverse plate (209) in a rotating mode, one end of the second ball screw (206) is fixedly arranged at the power output end of the second motor (207), a second ball screw nut table (208) is movably arranged on the outer surface of the second ball screw (206), and a second ball screw nut table (208) is fixedly arranged on the opposite surfaces of the first ball screw nut table (210).
3. A reaction extraction apparatus according to claim 1, wherein: the measuring cylinder bearing plate platform (301) is welded with the measuring cylinder (302), the separating funnel (304) is welded with the reaction cylinder (305), and three groups of T-shaped bosses are longitudinally and equidistantly arranged below the measuring cylinder bearing plate platform (301).
4. A reaction extraction apparatus according to claim 1, wherein: the reaction cylinder (305) is connected with the stirring shaft (307) through a bearing, the stirring shaft (307) is connected with the variable frequency motor (308) through a coupling, and the discharging pipe (309) is connected with the pipe cover (310) through threads.
5. A reaction extraction apparatus according to claim 2, wherein: the first ball screw support frame (202) is connected with the first ball screw (203) through a bearing, and the first ball screw (203) is connected with the first motor (204) through a coupling.
6. A reaction extraction apparatus according to claim 2, wherein: the supporting transverse plate (209) is connected with the second ball screw (206) through a bearing, the second ball screw (206) is connected with the second motor (207) through a coupling, and three groups of grooves are longitudinally and equidistantly arranged above the second connecting bearing plate (211).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320484342.XU CN220111048U (en) | 2023-03-14 | 2023-03-14 | Reaction extraction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320484342.XU CN220111048U (en) | 2023-03-14 | 2023-03-14 | Reaction extraction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220111048U true CN220111048U (en) | 2023-12-01 |
Family
ID=88887343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320484342.XU Active CN220111048U (en) | 2023-03-14 | 2023-03-14 | Reaction extraction device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220111048U (en) |
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- 2023-03-14 CN CN202320484342.XU patent/CN220111048U/en active Active
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