CN115318214A - Reaction device for preparing indolopyrrole compound - Google Patents
Reaction device for preparing indolopyrrole compound Download PDFInfo
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- CN115318214A CN115318214A CN202210990936.8A CN202210990936A CN115318214A CN 115318214 A CN115318214 A CN 115318214A CN 202210990936 A CN202210990936 A CN 202210990936A CN 115318214 A CN115318214 A CN 115318214A
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- water bath
- ice
- clamping
- fluidized
- dispersing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0006—Controlling or regulating processes
- B01J19/0013—Controlling the temperature of the process
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L7/00—Heating or cooling apparatus; Heat insulating devices
- B01L7/02—Water baths; Sand baths; Air baths
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L9/00—Supporting devices; Holding devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L9/00—Supporting devices; Holding devices
- B01L9/50—Clamping means, tongs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00002—Chemical plants
- B01J2219/00004—Scale aspects
- B01J2219/00011—Laboratory-scale plants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00051—Controlling the temperature
- B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
- B01J2219/00087—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor
- B01J2219/00103—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor in a heat exchanger separate from the reactor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2300/00—Additional constructional details
- B01L2300/18—Means for temperature control
- B01L2300/1894—Cooling means; Cryo cooling
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Clinical Laboratory Science (AREA)
- Organic Chemistry (AREA)
- Indole Compounds (AREA)
Abstract
The invention discloses a reaction device for preparing indole pyrrole compounds, which comprises a water bath, a magnetic stirrer, a flask clamping and fixing mechanism, a fluidized ice making machine, a fluidized ice conveying pipe, a circulating water pipe and a fluidized ice uniform adding mechanism, wherein the water bath is arranged on the magnetic stirrer, the flask clamping and fixing mechanism is fixedly arranged at the upper end of the water bath, the flask is arranged in the water bath, the fluidized ice making machine is arranged at the outer side of the water bath, the circulating water pipe is arranged between the bottom wall of the water bath and the fluidized ice making machine, the fluidized ice making machine is connected with an ice conveying pump, the fluidized ice uniform adding mechanism is arranged on the water bath, and the fluidized ice uniform adding mechanism is connected with the ice conveying pump through the fluidized ice conveying pipe. The invention relates to the technical field of chemical reaction devices, and particularly provides a reaction device for preparing an indolopyrrole compound, which has a flask clamping and fixing function, can ensure stable reaction and constant temperature in a water bath.
Description
Technical Field
The invention relates to the technical field of chemical reaction devices, in particular to a reaction device for preparing an indolopyrrole compound.
Background
In the process of preparing the indolopyrrole compound by adopting the existing experimental device, a flask is required to be placed in a water bath, and a constant-temperature water bath is kept, so that the normal reaction is ensured. The existing reaction device for preparing the indole and pyrrole compound is lack of a flask fixing structure, and the flask is easy to incline during the reaction, so that the normal reaction is influenced; meanwhile, in order to ensure a constant-temperature water bath, constant-temperature ice water needs to be regularly introduced into the water bath pool, but the existing reaction device for preparing the indolopyrrole compound cannot uniformly introduce the ice water into the water bath pool, so that the uniformity of the temperature of water at each part in the water bath pool is influenced, and the experimental failure or the product yield is low.
Disclosure of Invention
In order to overcome the defects, the invention provides a reaction device for preparing the indole and pyrrole compound, which has the functions of clamping and fixing a flask, ensures the stable reaction and the constant temperature in a water bath tank.
The invention provides the following technical scheme: the invention provides a reaction device for preparing an indole pyrrole compound, which comprises a water bath, a magnetic stirrer, a flask clamping and fixing mechanism, a fluidized ice making machine, a fluidized ice conveying pipe, a circulating water pipe and a fluidized ice uniform adding mechanism, wherein the water bath is arranged on the magnetic stirrer, the flask clamping and fixing mechanism is fixedly arranged at the upper end of the water bath, the flask is arranged in the water bath and is fixed by the flask clamping and fixing mechanism, the fluidized ice making machine is arranged at the outer side of the water bath, the circulating water pipe is arranged between the bottom wall of the water bath and the fluidized ice making machine, a control valve is arranged on the circulating water pipe, an ice conveying pump is connected to the fluidized ice making machine, the fluidized ice uniform adding mechanism is arranged on the water bath, the fluidized ice uniform adding mechanism is connected with the ice conveying pump by the fluidized ice conveying pipe, and the fluidized ice uniform adding mechanism is rotatably connected with the fluidized ice conveying pipe.
Preferably, the circulating water pipe is inclined, and the height of the end of the circulating water pipe connected with the water bath is higher than that of the end connected with the fluidized ice making machine.
The stable centre gripping of flask is fixed for realizing, flask centre gripping fixed establishment symmetry is equipped with two sets ofly, flask centre gripping fixed establishment includes support frame, protecting crust one, centre gripping driving motor, drive chain, centre gripping driving screw sleeve, grip block and direction subassembly, the support frame is located on the roof of water bath, protecting crust one is located on the lateral wall of support frame, centre gripping driving motor locates on the interior diapire of protecting crust one, centre gripping driving screw rotates and locates on the support frame, centre gripping driving screw's one end is rotated and is located in the protecting crust one, all fix on centre gripping driving motor's output shaft and the centre gripping driving screw and be equipped with sprocket one and sprocket two, the drive chain cover is located sprocket one and sprocket two, drive chain and sprocket one, the meshing of sprocket two, centre gripping driving screw sleeve locates on the centre gripping driving screw through threaded connection, the grip block is located on the centre gripping driving screw sleeve, the direction subassembly is located in the backup pad, the direction subassembly links to each other with the grip block, be equipped with the centre gripping recess on the grip block.
Preferably, a silica gel cushion is arranged in the clamping groove.
Further, the direction subassembly includes direction slide bar and guide sleeve, the direction slide bar is located on the support frame, the guide sleeve slides and locates on the direction slide bar, the guide sleeve links to each other with the grip block.
In order to realize the uniform addition of fluidized ice in a water bath, the mechanism for uniformly adding the fluidized ice comprises a second protective shell, a rotating motor, a driving conical wheel, a driven conical wheel, a dispersing shaft and a dispersing disc, wherein the second protective shell is arranged on the outer side wall of the water bath, the rotating motor is arranged on the inner bottom wall of the second protective shell, the driving conical wheel is arranged on an output shaft of the rotating motor, the dispersing shaft is rotatably arranged on the side wall of the water bath, the driven conical wheel is arranged on the dispersing shaft and is meshed with the driving conical wheel, the dispersing disc is arranged on the dispersing shaft, a plurality of groups of fluidized ice dispersing holes are uniformly distributed in the dispersing disc, the dispersing shaft and the dispersing disc are both arranged in a hollow structure, the dispersing shaft is communicated with the dispersing disc, and the fluidized ice conveying pipe is rotatably connected with the dispersing shaft.
Preferably, the fluidized ice making machine is symmetrically provided with two groups about the water bath, and the fluidized ice uniformly adding mechanism and the fluidized ice making machine are correspondingly provided with two groups.
The invention with the structure has the following beneficial effects: according to the reaction device for preparing the indole pyrrole compounds, the flask is stably clamped through the flask clamping and fixing mechanism, so that the stability of the position of the flask in the water bath tank is ensured, and the fluidized ice is uniformly added into the water bath tank through the fluidized ice uniform adding mechanism, so that the stability, uniformity and balance of the water bath tank are ensured.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of the overall structure of a reaction apparatus for preparing an indolopyrrole compound according to the present invention;
FIG. 2 is a schematic structural diagram of a flask clamping and fixing mechanism of a reaction device for preparing an indole pyrrole compound according to the present invention;
FIG. 3 is a schematic top view of a clamping plate of a reaction apparatus for preparing an indolopyrrole compound according to the present invention;
FIG. 4 is a schematic structural diagram of a mechanism for uniformly adding fluidized ice in a reaction apparatus for preparing an indole pyrrole compound according to the present invention.
The device comprises a water bath 1, a magnetic stirrer 2, a flask 3, a flask 4, a flask clamping and fixing mechanism 5, a fluidized ice making machine 6, a fluidized ice conveying pipe 7, a circulating water pipe 8, a fluidized ice uniform adding mechanism 9, an ice conveying pump 10, a support frame 11, a first protective shell 12, a clamping driving motor 13, a driving chain 14, a clamping driving screw 15, a clamping driving threaded sleeve 16, a clamping plate 17, a clamping groove 18, a silica gel cushion 19, a guide slide rod 20, a guide sleeve 21, a second protective shell 22, a rotating motor 23, a driving cone pulley 24, a driven cone pulley 25, a dispersing shaft 26 and a dispersing disc.
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.
It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
As shown in fig. 1 to 4, the technical solution adopted by the present invention is as follows: the utility model provides a reaction unit for preparing indole pyrrole class compound, including water bath 1, magnetic stirrers 2, flask 3, flask centre gripping fixed establishment 4, fluidization ice makes machine 5, fluidization ice conveyer pipe 6, circulating water pipe 7 and the even mechanism 8 that adds of fluidization ice, water bath 1 is located on magnetic stirrers 2, flask centre gripping fixed establishment 4 is fixed and is located water bath 1 upper end, flask 3 is arranged in water bath 1, flask 3 is fixed through flask centre gripping fixed establishment 4, fluidization ice makes machine 5 locates the water bath 1 outside, circulating water pipe 7 locates between the diapire of water bath 1 and fluidization ice makes machine 5, be equipped with the control valve on circulating water pipe 7, it is equipped with ice delivery pump 9 to connect on the fluidization ice makes machine 5, fluidization ice evenly adds mechanism 8 and locates on water bath 1, fluidization ice evenly adds mechanism 8 and links to each other with ice delivery pump 9 through fluidization ice delivery pipe 6, fluidization ice evenly adds mechanism 8 and links to each other with fluidization ice 6 rotation conveyer pipe. The circulating water pipe 7 is obliquely arranged, and the height of one end of the circulating water pipe 7 connected with the water bath 1 is higher than that of one end connected with the fluidized ice making machine 5.
The flask centre gripping fixed establishment 4 symmetry is equipped with two sets ofly, flask centre gripping fixed establishment 4 includes support frame 10, protecting crust one 11, centre gripping driving motor 12, drive chain 13, centre gripping driving screw 14, centre gripping driving screw sleeve 15, grip block 16 and direction subassembly, support frame 10 locates on the roof of water bath 1, protecting crust one 11 is located on the lateral wall of support frame 10, centre gripping driving motor 12 locates on the interior diapire of protecting crust one 11, centre gripping driving screw 14 rotates and locates on support frame 10, the one end of centre gripping driving screw 14 rotates and locates in protecting crust one 11, all be equipped with sprocket one and sprocket two on the output shaft of centre gripping driving motor 12 and the centre gripping driving screw 14, drive chain 13 cover is located on sprocket one and sprocket two, drive chain 13 and sprocket one, sprocket two meshes, centre gripping driving screw sleeve 15 locates on centre gripping driving screw 14 through threaded connection, grip block 16 locates on the centre gripping driving screw sleeve 15, the direction subassembly is located on the backup pad, the direction subassembly links to each other with grip block 16, be equipped with centre gripping recess 17 on the grip block 16. A silica gel cushion 18 is arranged in the holding groove 17. The guide assembly comprises a guide sliding rod 19 and a guide sleeve 20, the guide sliding rod 19 is arranged on the support frame 10, the guide sleeve 20 is arranged on the guide sliding rod 19 in a sliding mode, and the guide sleeve 20 is connected with the clamping plate 16.
In this embodiment, even mechanism 8 that adds of fluidized ice includes two 21 protective casings, rotating electrical machines 22, initiative cone pulley 23, driven cone pulley 24, dispersion axle 25 and dispersion impeller 26, two 21 protective casings are located on the lateral wall of water bath 1, rotating electrical machines 22 is located on the interior diapire of two 21 protective casings, initiative cone pulley 23 is located on rotating electrical machines 22's the output shaft, dispersion axle 25 rotates and locates on the lateral wall of water bath 1, driven cone pulley 24 is located on the dispersion axle 25, driven cone pulley 24 meshes with initiative cone pulley 23, dispersion impeller 26 is located on the dispersion axle 25, evenly distributed is equipped with multiunit fluidized ice dispersion hole on the dispersion impeller 26, dispersion axle 25 and dispersion impeller 26 are hollow structure setting, dispersion axle 25 and dispersion impeller 26 intercommunication, fluidized ice conveyer pipe 6 rotates with dispersion axle 25 and links to each other. The fluidized ice making machine 5 is symmetrically provided with two groups about the water bath 1, and the fluidized ice uniformly adding mechanism 8 and the fluidized ice making machine 5 are correspondingly provided with two groups.
When the fluidized ice transfer device is used specifically, a flask 3 filled with indolopyrrole synthetic preparation raw materials is placed in a water bath 1, a clamping driving motor 12 is started, the clamping driving motor 12 drives a clamping driving screw 14 to rotate under the action of a driving chain 13, a clamping driving threaded sleeve 15 moves along the clamping driving screw 14 under the guiding action of a guide slide rod 19 and a guide sleeve 20, the clamping driving threaded sleeve 15 drives a clamping plate 16 to stably clamp the upper part of the flask 3, fluidized ice is transferred into the water bath 1 through a fluidized ice making machine 5 in the reaction process, discharged water corresponding to the water in the water bath 1 flows into the fluidized ice making machine 5, a rotating motor 22 is started, the rotating motor 22 drives a driving conical wheel 23 to rotate, a dispersing shaft 25 can be driven to rotate through meshing of the driving conical wheel 23 and a driven conical wheel 24, the dispersing shaft 25 drives a dispersing disc 26 to rotate, and a fluidized ice conveying pipe 6 conveys the fluidized ice into the dispersing shaft 25 and uniformly disperses the fluidized ice in the water bath 1 through the dispersing disc 26, so that uniform flow of the fluidized ice in the water bath 1 is ensured.
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 (7)
1. The utility model provides a reaction unit for preparing indole and pyrrole class compound, its characterized in that, evenly add the mechanism including water bath, magnetic stirrers, flask centre gripping fixed establishment, fluidization ice maker, fluidization ice conveyer pipe, circulating pipe and fluidization ice, the water bath is located on the magnetic stirrers, flask centre gripping fixed establishment is fixed locates water bath upper end, the water bath is arranged in to the flask, the water bath outside is located to the fluidization ice maker, circulating pipe locates between the diapire of water bath and the fluidization ice maker, the last control valve that is equipped with of circulating pipe, it is equipped with the ice delivery pump to connect on the fluidization ice maker, fluidization ice evenly adds the mechanism and locates on the water bath, fluidization ice evenly adds the mechanism and links to each other with the ice delivery pump through fluidization ice conveyer pipe, fluidization ice evenly adds the mechanism and rotates with fluidization ice conveyer pipe and links to each other.
2. The reaction device for preparing the indolopyrrole compound according to claim 1, wherein the circulating water pipe is inclined, and the height of the end of the circulating water pipe connected to the water bath is higher than the height of the end of the circulating water pipe connected to the fluidized ice making machine.
3. The reaction device for preparing indole pyrrole compounds according to claim 2, wherein the flask clamping and fixing mechanism comprises two groups, the flask clamping and fixing mechanism comprises a support frame, a first protection shell, a clamping driving motor, a driving chain, a clamping driving screw, a clamping driving threaded sleeve, a clamping plate and a guiding component, the support frame is arranged on the top wall of the water bath pool, the first protection shell is arranged on the outer side wall of the support frame, the clamping driving motor is arranged on the inner bottom wall of the first protection shell, the clamping driving screw is rotatably arranged on the support frame, one end of the clamping driving screw is rotatably arranged in the first protection shell, a first chain wheel and a second chain wheel are fixedly arranged on an output shaft of the clamping driving motor and the clamping driving screw, the driving chain is sleeved on the first chain wheel and the second chain wheel, the driving chain is meshed with the first chain wheel and the second chain wheel, the clamping driving threaded sleeve is arranged on the clamping driving screw through threaded connection, the clamping plate is arranged on the clamping driving threaded sleeve, the guiding component is arranged on the support plate, and the clamping plate is provided with a clamping groove.
4. The reaction device for preparing the indolopyrrole compound according to claim 3, wherein a silica gel cushion is provided in the holding groove.
5. The reaction device for preparing the indolopyrrole compound according to claim 4, wherein the guide assembly comprises a guide slide bar and a guide sleeve, the guide slide bar is arranged on the support frame, the guide sleeve is slidably arranged on the guide slide bar, and the guide sleeve is connected with the clamping plate.
6. The reaction device for preparing an indolopyrrole compound according to claim 1, wherein the mechanism for uniformly adding fluidized ice includes a second protective shell, a rotating motor, a driving cone wheel, a driven cone wheel, a dispersing shaft and a dispersing disk, the second protective shell is disposed on an outer side wall of the water bath, the rotating motor is disposed on an inner bottom wall of the second protective shell, the driving cone wheel is disposed on an output shaft of the rotating motor, the dispersing shaft is rotatably disposed on a side wall of the water bath, the driven cone wheel is disposed on the dispersing shaft, the driven cone wheel is engaged with the driving cone wheel, the dispersing disk is disposed on the dispersing shaft, a plurality of groups of fluidized ice dispersing holes are uniformly distributed on the dispersing disk, the dispersing shaft and the dispersing disk are both hollow, the dispersing shaft is communicated with the dispersing disk, and the fluidized ice conveying pipe is rotatably connected with the dispersing shaft.
7. The reaction device for preparing the indolopyrrole compound according to claim 6, wherein the fluidized ice making machine is provided with two groups symmetrically about the water bath, and the fluidized ice uniformly adding mechanism and the fluidized ice making machine are provided with two groups correspondingly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210990936.8A CN115318214A (en) | 2022-08-18 | 2022-08-18 | Reaction device for preparing indolopyrrole compound |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210990936.8A CN115318214A (en) | 2022-08-18 | 2022-08-18 | Reaction device for preparing indolopyrrole compound |
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| CN115318214A true CN115318214A (en) | 2022-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210990936.8A Pending CN115318214A (en) | 2022-08-18 | 2022-08-18 | Reaction device for preparing indolopyrrole compound |
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| CN208526668U (en) * | 2018-06-06 | 2019-02-22 | 中验检测（福建）有限公司 | A kind of water-bath for drug detection |
| CN208662044U (en) * | 2017-12-30 | 2019-03-29 | 郑州嘉林新材料科技有限公司 | Top support type chemical test flask cleaning device |
| CN209173942U (en) * | 2018-11-30 | 2019-07-30 | 江西秀康威达新型材料有限公司 | A kind of reaction kettle cooling device |
| CN212237262U (en) * | 2020-04-02 | 2020-12-29 | 糜郑勤 | Be suitable for enamel reactor of production vitamin E |
| CN214020897U (en) * | 2020-12-07 | 2021-08-24 | 无锡市兰博试验设备有限公司 | Novel constant temperature water tank and outer circulation device thereof |
| CN214159417U (en) * | 2020-09-27 | 2021-09-10 | 宁波同盛生物科技有限公司 | Magnetic stirrer capable of heating |
| CN215611520U (en) * | 2021-07-26 | 2022-01-25 | 无锡明燕装备有限公司 | Reaction kettle with cooling mechanism |
| CN216826221U (en) * | 2022-01-26 | 2022-06-28 | 郑州舒科生物科技有限公司 | Reaction device for preparing indole compounds |
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2022
- 2022-08-18 CN CN202210990936.8A patent/CN115318214A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2217718Y (en) * | 1995-03-14 | 1996-01-17 | 崔文亮 | Water-bath type vapour-gas liquified gas automatic-controlled envaporation device |
| CN2506342Y (en) * | 2001-08-22 | 2002-08-21 | 于中生 | Circular cooling device |
| CN2581065Y (en) * | 2002-11-27 | 2003-10-22 | 中国铝业股份有限公司 | Water-bath stirring reaction tank |
| CN207745814U (en) * | 2017-11-29 | 2018-08-21 | 浙江安环安全科技有限公司 | A kind of magnetic stirring apparatus |
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| CN214020897U (en) * | 2020-12-07 | 2021-08-24 | 无锡市兰博试验设备有限公司 | Novel constant temperature water tank and outer circulation device thereof |
| CN215611520U (en) * | 2021-07-26 | 2022-01-25 | 无锡明燕装备有限公司 | Reaction kettle with cooling mechanism |
| CN216826221U (en) * | 2022-01-26 | 2022-06-28 | 郑州舒科生物科技有限公司 | Reaction device for preparing indole compounds |
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