CN213527518U - Evaporation crystallization device for preparing dichloro pentachloromethyl thiazole - Google Patents
Evaporation crystallization device for preparing dichloro pentachloromethyl thiazole Download PDFInfo
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- CN213527518U CN213527518U CN202022509599.5U CN202022509599U CN213527518U CN 213527518 U CN213527518 U CN 213527518U CN 202022509599 U CN202022509599 U CN 202022509599U CN 213527518 U CN213527518 U CN 213527518U
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Abstract
The utility model relates to an evaporation crystallization device's technical field especially relates to an evaporation crystallization device that dichloro pentachloromethyl thiazole prepared, its multiunit puddler stirs the mixture to solution, improves the mixing uniformity of solution, improves dichloro pentachloromethyl thiazole's quality, the crystallization object of cavity inner wall passes through the rotatory clearance of multiunit scraper blade, the convenience of the crystal clearance that adheres to on the improvement cavity inner wall, improve the clearance effect of crystal, carry the crystallization through setting up helical blade, improve the unobstructed nature that the crystallization discharged, prevent that the crystallization from blockking up the pipeline, improve discharge efficiency, improve the practicality of device; still include landing leg, jar body, inlet pipe, row's material pipe, solenoid valve, first motor, mount, connecting rod, second heating device, puddler and helical blade, the landing leg top is connected with jar body bottom, and jar internal cavity that is provided with to cavity and steam recovery device intercommunication are provided with feed inlet and bin outlet in the cavity.
Description
Technical Field
The utility model relates to an evaporation crystallization device's technical field especially relates to an evaporation crystallization device of dichloro pentachloromethyl thiazole preparation.
Background
The evaporative crystallization device for preparing dichloro pentachloromethylthiazole is an auxiliary device for evaporative crystallization for preparing dichloro pentachloromethylthiazole, and is widely used in the field of evaporative crystallization devices; the existing evaporation crystallization device for preparing dichloro pentachloromethyl thiazole is found in use, evaporation refers to a process of enabling a solvent in a solution to be separated from a solute through a heating mode, crystallization is a process of enabling the solute to be polymerized into a solid, the evaporation solvent is heated to enable the solution to be saturated from an unsaturated state, evaporation is continued, and the surplus solute can be separated out in a crystal form, namely evaporation crystallization.
SUMMERY OF THE UTILITY MODEL
For solving the technical problem, the utility model provides a multiunit puddler stirs the mixture to solution, improve the mixing uniformity of solution, improve dichloro pentachloromethyl thiazole's quality, cavity inner wall's crystalline substance passes through the rotatory clearance of multiunit scraper blade, improve the convenience of adnexed crystallization clearance on the cavity inner wall, improve the clearance effect of the crystalline solid, carry the crystallization through setting up helical blade, improve the patency that the crystallization discharged, prevent that the crystallization from blockking up the pipeline, improve emission efficiency, improve the evaporation crystallization device of dichloro pentachloromethyl thiazole preparation of the practicality of device.
The utility model discloses an evaporative crystallization device for preparing dichloro pentachloromethyl thiazole, which also comprises a supporting leg, a tank body, a feeding pipe, a discharging pipe, an electromagnetic valve, a first motor, a fixed frame, a connecting rod, a second heating device, a stirring rod and a helical blade, wherein the top end of the supporting leg is connected with the bottom end of the tank body, a cavity is arranged in the tank body and is communicated with a steam recovery device, a feeding hole and a discharging hole are arranged in the cavity, the feeding hole and the discharging hole are communicated with the cavity, the feeding pipe is communicated with the feeding hole of the cavity, the top end of the discharging pipe is connected with the bottom end of the tank body and is communicated with the discharging hole of the cavity, the inner side wall of the discharging pipe is provided with the first heating device, the electromagnetic valve is communicated with the bottom end output end of the discharging pipe, the first motor is arranged at the, and the epitaxy of mount is connected with jar internal side wall, and the fixed suit of connecting rod is on the pivot lateral wall, and the connecting rod bottom is provided with the multiunit scraper blade, and the epitaxy of multiunit scraper blade pastes tightly with jar internal side wall, and second heating device sets up on jar internal side wall and communicates with each other with the cavity, and the multiunit puddler suit is respectively on the pivot lateral wall and sets up in the cavity, and the helical blade suit is on the pivot lateral wall and sets up in the discharge tube inside.
The utility model discloses an evaporation crystallization device of dichloro pentachloromethyl thiazole preparation, steam recovery unit includes the gas collecting channel, first trachea, the collection box, the arc cover, water pipe and water pump, the gas collecting channel set up on jar external wall and communicate with each other with the cavity indoor, communicate with each other in first trachea input end and the gas collecting channel, the collection box left end is connected with jar external wall, be provided with the cavity in the collection box, be provided with the gas vent in the cavity, communicate with each other in gas vent and the cavity, first trachea output end communicates with each other in the cavity, the arc cover is extensive to be connected and sets up in the cavity with the collection box inside wall, inside communicating and stretching into the cavity in water pipe input and the cavity, water pipe output end and cavity in-pass through, the water pump is installed at the collection box top and is communicated and set up.
The utility model discloses an evaporation crystallization device of dichloro pentachloromethyl thiazole preparation, still include the second trachea, the rose box, draught fan and filter pulp, second trachea input communicates with each other with the cavity gas vent, be provided with the cabin in the rose box, the under-deck gas vent that is provided with, water inlet and outlet, and the gas vent, water inlet and gas vent all communicate with each other in the cabin, second trachea output communicates with each other and stretches into the under-deck portion with the cabin, the draught fan is installed and communicates with each other in the rose box top and with the second trachea, multiunit filter pulp's epitaxy is connected and is communicated the setting in the cabin with the rose box inside wall.
The utility model discloses an evaporation crystallization device of dichloro pentachloromethyl thiazole preparation still includes row workbin and second motor, arranges the workbin and is provided with empty storehouse, and the empty storehouse left end is provided with the discharge gate, communicates with each other in discharge gate and the empty storehouse to the empty storehouse top communicates with each other with solenoid valve, and the second motor is installed at row workbin right-hand member, and second motor output transversely is provided with the conveying leaf, and the conveying leaf setting is in the empty storehouse.
The utility model discloses an evaporative crystallization device of dichloro pentachloromethyl thiazole preparation still includes the multiunit reinforcement, and the multiunit reinforcement sets up respectively on the lateral wall of landing leg and plays the fixed action to the jar body.
The utility model discloses an evaporation crystallization device of dichloro pentachloromethyl thiazole preparation still includes automatic relief valve, and automatic relief valve sets up on the lateral wall of the jar body and communicates with each other in with the cavity.
The utility model discloses an evaporative crystallization device of dichloro pentachloromethyl thiazole preparation still includes the observation window, and the observation window setting communicates with each other on jar external wall and with the cavity.
Compared with the prior art, the beneficial effects of the utility model are that: the raw materials for processing the dichloro pentachloromethyl thiazole are placed in the cavity through the feeding pipe, after the placement is finished, the first motor is turned on, the first motor drives a plurality of groups of stirring rods through the rotating shaft to stir and mix the solution, the mixing uniformity of the solution is improved, the quality of the dichloro pentachloromethyl thiazole is improved, the solution in the chamber is heated by opening the first heating device and the second heating device, the solution is discharged into the vapor recovery device after being evaporated, after the solution is evaporated, the crystal objects on the inner wall of the chamber are cleaned by the rotation of the plurality of groups of scrapers, so that the crystals attached to the inner wall of the chamber fall to the bottom end of the chamber, the convenience of cleaning the crystals attached to the inner wall of the chamber is improved, the cleaning effect of crystals is improved, carry the crystallization through setting up helical blade, improve the patency that the crystallization discharged, prevent that the crystallization from blockking up the pipeline, improve emission efficiency, improve the practicality of device.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is an enlarged schematic view of the discharge pipe connected to a first heating device or the like;
FIG. 3 is an enlarged schematic view of the connection of the recovery tank to the arc cover or the like;
FIG. 4 is an enlarged schematic view of the connection of the filter box with the induced draft fan;
in the drawings, the reference numbers: 1. a support leg; 2. a tank body; 3. a feed pipe; 4. a discharge pipe; 5. a first heating device; 6. an electromagnetic valve; 7. a first motor; 8. a rotating shaft; 9. a fixed mount; 10. A connecting rod; 11. a squeegee; 12. a second heating device; 13. a stirring rod; 14. a helical blade; 15. a gas-collecting hood; 16. a first air pipe; 17. a recycling bin; 18. an arc-shaped cover; 19. a water pipe; 20. a water pump; 21. a second air pipe; 22. a filter box; 23. an induced draft fan; 24. filtering cotton; 25. a discharge box; 26. a second motor; 27. conveying leaves; 28. a reinforcement; 29. an automatic pressure relief valve; 30. and (4) an observation window.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
As shown in figures 1 to 4, the evaporative crystallization device for preparing pentachloromethylthiazole dichloride further comprises a supporting leg 1, a tank body 2, a feeding pipe 3, a discharging pipe 4, an electromagnetic valve 6, a first motor 7, a fixing frame 9, a connecting rod 10, a second heating device 12, a stirring rod 13 and a helical blade 14, wherein the top end of the supporting leg 1 is connected with the bottom end of the tank body 2, a cavity is arranged in the tank body 2 and is communicated with a steam recovery device, a feeding port and a discharging port are arranged in the cavity, the feeding port and the discharging port are communicated with the cavity, the feeding pipe 3 is communicated with a feeding port of the cavity, the top end of the discharging pipe 4 is connected with the bottom end of the tank body 2 and is communicated with a discharging port of the cavity, a first heating device 5 is arranged on the inner side wall of the discharging pipe 4, the electromagnetic valve 6 is communicated with and arranged at the output end at the bottom end of, a rotating shaft 8 is longitudinally arranged at the output end of the bottom end of the first motor 7, a fixing frame 9 is sleeved on the outer side wall of the rotating shaft 8, the extension of the fixing frame 9 is connected with the inner side wall of the tank body 2, a connecting rod 10 is fixedly sleeved on the outer side wall of the rotating shaft 8, a plurality of groups of scraping plates 11 are arranged at the bottom end of the connecting rod 10, the extensions of the plurality of groups of scraping plates 11 are tightly attached to the inner side wall of the tank body 2, a second heating device 12 is arranged on the inner side wall of the tank body 2 and communicated with the cavity, a plurality of groups of stirring rods 13 are respectively sleeved on the outer side wall of; firstly, placing a processing raw material of dichloro pentachloromethyl thiazole into a cavity through a feeding pipe 3, opening a first motor 7 after the placement is finished, enabling the first motor 7 to drive a plurality of groups of stirring rods 13 through a rotating shaft 8 to stir and mix the solution, improving the mixing uniformity of the solution, improving the quality of the dichloro pentachloromethyl thiazole, heating the solution in the cavity by opening a first heating device 5 and a second heating device 12, discharging the evaporated solution into a steam recovery device, cleaning a crystal object on the inner wall of the cavity through the rotation of a plurality of groups of scraping plates 11 after the evaporation of the solution is finished, enabling the crystal attached on the inner wall of the cavity to fall to the bottom end of the cavity, improving the convenience of cleaning the crystal attached on the inner wall of the cavity, improving the cleaning effect of the crystal, conveying the crystal by arranging a helical blade 14, improving the smoothness of crystal discharge, and preventing the pipeline from being blocked by the crystal, the discharge efficiency is improved, and the practicability of the device is improved.
The utility model discloses an evaporation crystallization device of dichloro pentachloromethyl thiazole preparation, steam recovery unit includes gas collecting channel 15, first trachea 16, collection box 17, arc cover 18, water pipe 19 and water pump 20, gas collecting channel 15 sets up on jar body 2 lateral wall and communicates with each other in the cavity, first trachea 16 input communicates with each other in the gas collecting channel 15, collection box 17 left end is connected with jar body 2 lateral wall, be provided with the cavity in the collection box 17, be provided with the gas vent in the cavity, the gas vent communicates with each other in the cavity, first trachea 16 output communicates with each other in the cavity, arc cover 18 is extensive to be connected with collection box 17 inside wall and set up in the cavity, water pipe 19 input communicates with each other in the cavity and stretches into the cavity, water pipe 19 output communicates with each other in the cavity, water pump 20 is installed on collection box 17 top and communicates and sets up on water pipe 19; steam discharges to the collection box 17 in through first trachea 16's transport in the cavity, steam gets into back in the collection box 17, form the comdenstion water after the partial steam cooling, collect the comdenstion water through arc cover 18, make the comdenstion water fall to collection box 17 bottom and collect, through opening water pump 20, make the comdenstion water in the collection box 17 carry out the evaporation once more in flowing back to the cavity through water pipe 19, improve the cleanliness factor of dichloro pentachloromethyl thiazole evaporation, reduce the waste of material, improve material utilization, and the practicability is improved.
The utility model discloses an evaporative crystallization device for preparing dichloro pentachloromethyl thiazole, still include second trachea 21, rose box 22, draught fan 23 and filter pulp 24, second trachea 21 input communicates with each other with the cavity gas vent, be provided with the cabin in the rose box 22, be provided with the gas vent in the cabin, water inlet and outlet, and gas vent, water inlet and gas vent all communicate with each other in the cabin, second trachea 21 output communicates with each other in the cabin and stretches into the cabin, draught fan 23 is installed on rose box 22 top and communicates with each other in the second trachea 21, the extension of multiunit filter pulp 24 is connected and communicates with the filter box 22 inside wall and sets up in the cabin; through opening draught fan 23, make the steam in the collection box 17 carry through second trachea 21 and discharge to the aquatic in the rose box 22, water accomplishes the back to steam filtration, and steam upwards passes filter pulp 24 and is discharged by the cabin gas vent, filters steam through using water, reduces the concentration of steam, filters the absorption of steam through filter pulp 24, reduces harmful substance content in the steam, improves the steam emission cleanliness factor.
The utility model discloses an evaporation crystallization device that dichloro pentachloromethyl thiazole prepared, still include row workbin 25 and second motor 26, arrange and be provided with empty storehouse in the workbin 25, the empty storehouse left end is provided with the discharge gate, the discharge gate communicates with each other with the empty storehouse in, and the empty storehouse top communicates with solenoid valve 6, second motor 26 is installed at row workbin 25 right-hand member, second motor 26 output end transversely is provided with conveying leaf 27, and conveying leaf 27 sets up in the empty storehouse; through opening solenoid valve 6, make the crystallization in the cavity drop to the empty storehouse in, drive conveying leaf 27 rotatory through opening second motor 26, make conveying leaf 27 discharge the material in the empty storehouse, improve the discharge rate of material, reduce the material and pile up and cause the pipeline to block up, improve the practicality.
The utility model discloses an evaporative crystallization device for preparing dichloro pentachloromethyl thiazole, which also comprises a plurality of groups of reinforcements 28, wherein the plurality of groups of reinforcements 28 are respectively arranged on the outer side wall of the supporting leg 1 and play a role in fixing the tank body 2; through setting up multiunit reinforcement 28, improve the fastness of being connected between landing leg 1 and the jar body 2, improve the life of device, improve the practicality.
The utility model discloses an evaporative crystallization device for preparing dichloro pentachloromethyl thiazole, which also comprises an automatic pressure relief valve 29, wherein the automatic pressure relief valve 29 is arranged on the outer side wall of the tank body 2 and is communicated with the cavity; through setting up automatic relief valve 29, improve the convenience that the air pressure discharged in the cavity, prevent that the too high emergence of air pressure in the cavity is dangerous, improve the security.
The utility model discloses an evaporative crystallization device for preparing dichloro pentachloromethyl thiazole, which also comprises an observation window 30, wherein the observation window 30 is arranged on the outer side wall of the tank body 2 and is communicated with the cavity; by arranging the observation window 30, the convenience of working observation in the chamber is improved.
The utility model discloses an evaporation crystallization device of dichloro pentachloromethyl thiazole preparation, it is at work, at first place dichloro pentachloromethyl thiazole's processing raw materials in the cavity through inlet pipe 3, place in the completion after through opening first motor 7, make first motor 7 drive multiunit puddler 13 through pivot 8 and stir the mixture to solution, heat the solution in the cavity through opening first heating device 5 and second heating device 12, discharge to the steam recovery unit after making the solution evaporate, after the solution evaporation is accomplished, the crystal object of cavity inner wall passes through the rotatory clearance of multiunit scraper blade 11, make the attached crystal on the cavity inner wall fall to the cavity bottom, carry the crystal through setting up helical blade 14, improve the unobstructed nature that the crystal discharged, then the steam discharges to the collection box 17 through the transport of first trachea 16 in the cavity, steam gets into the collection box 17 after, form the comdenstion water after the cooling of part steam, collect the comdenstion water through arc cover 18, make the comdenstion water fall to collection box 17 bottom and collect, through opening water pump 20, make the comdenstion water in the collection box 17 flow back to the cavity through water pipe 19 and evaporate once more, then through opening draught fan 23, make the steam in the collection box 17 carry the aquatic of discharging to the rose box 22 in through second trachea 21, water is to the filtration completion back of steam, steam upwards passes filter pulp 24 and is discharged by the cabin gas vent, through opening solenoid valve 6, make the interior crystal of cavity fall to the empty storehouse in, it is rotatory to drive conveying leaf 27 through opening second motor 26, make conveying leaf 27 discharge the material in the empty storehouse.
The utility model discloses an evaporative crystallization device for preparing dichloro pentachloromethyl thiazole, the installation mode, the connection mode or the setting mode of which are common mechanical modes, and the device can be implemented as long as the beneficial effects can be achieved; the utility model discloses an evaporation crystallization device's of dichloro pentachloromethyl thiazole preparation first heating device 5, solenoid valve 6, first motor 7, second heating device 12, water pump 20, draught fan 23, second motor 26 and automatic relief valve 29 purchase on the market, this industry technical staff only need according to its subsidiary instructions install and operate can.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (7)
1. An evaporative crystallization device for preparing dichloro pentachloromethyl thiazole, which is characterized by also comprising a supporting leg (1), a tank body (2), a feeding pipe (3), a discharging pipe (4), an electromagnetic valve (6), a first motor (7), a fixed frame (9), a connecting rod (10), a second heating device (12), a stirring rod (13) and a helical blade (14), wherein the top end of the supporting leg (1) is connected with the bottom end of the tank body (2), a cavity is arranged in the tank body (2) and is communicated with a steam recovery device, a feeding port and a discharging port are arranged in the cavity and are communicated with the cavity, the feeding pipe (3) is communicated with the feeding port of the cavity, the top end of the discharging pipe (4) is connected with the bottom end of the tank body (2) and is communicated with the discharging port of the cavity, a first heating device (5) is arranged on the inner side wall of the discharging pipe, the electromagnetic valve (6) is communicated with and arranged at the output end of the bottom end of the discharging pipe (4), the first motor (7) is arranged at the top end of the tank body (2), the output end of the bottom end of the first motor (7) is longitudinally provided with a rotating shaft (8), the fixed frame (9) is sleeved on the outer side wall of the rotating shaft (8), the extension of the fixed frame (9) is connected with the inner side wall of the tank body (2), a connecting rod (10) is fixedly sleeved on the outer side wall of the rotating shaft (8), a plurality of groups of scrapers (11) are arranged at the bottom end of the connecting rod (10), and the extension of multiunit scraper blade (11) pastes closely with jar body (2) inside wall, and second heating device (12) set up on jar body (2) inside wall and communicate with each other with the cavity, and multiunit puddler (13) suit respectively on pivot (8) lateral wall and set up in the cavity, and helical blade (14) suit is on pivot (8) lateral wall and set up inside row material pipe (4).
2. The evaporative crystallization device for preparing dichloro pentachloromethyl thiazole as claimed in claim 1, characterized in that the vapor recovery device comprises a gas collecting hood (15), a first gas pipe (16), a recovery box (17), an arc hood (18), a water pipe (19) and a water pump (20), the gas collecting hood (15) is arranged on the outer side wall of the tank body (2) and is communicated with the cavity, the input end of the first gas pipe (16) is communicated with the inside of the gas collecting hood (15), the left end of the recovery box (17) is connected with the outer side wall of the tank body (2), the recovery box (17) is internally provided with a cavity, the cavity is internally provided with a gas exhaust port, the gas exhaust port is communicated with the cavity, the output end of the first gas pipe (16) is communicated with the cavity, the extension of the arc hood (18) is connected with the inner side wall of the recovery box (17) and is arranged in the cavity, the input end of the water pipe (19) is communicated with the, the water pump (20) is arranged at the top end of the recovery box (17) and is communicated with the water pipe (19).
3. The evaporative crystallization device for preparing dichloro pentachloromethyl thiazole, according to claim 2, characterized by further comprising a second air pipe (21), a filter box (22), an induced draft fan (23) and filter cotton (24), wherein the input end of the second air pipe (21) is communicated with the exhaust port of the cavity, a cabin is arranged in the filter box (22), an exhaust port, a water inlet and a water outlet are arranged in the cabin, the exhaust port, the water inlet and the exhaust port are communicated with the cabin, the output end of the second air pipe (21) is communicated with the cabin and extends into the cabin, the induced draft fan (23) is arranged at the top end of the filter box (22) and is communicated with the interior of the second air pipe (21), and the extensions of the groups of filter cotton (24) are connected with the inner side wall of the filter box (22) and are communicated.
4. The evaporative crystallization device for preparing dichloro pentachloromethyl thiazole, as claimed in claim 3, further comprising a discharging box (25) and a second motor (26), wherein the discharging box (25) is provided with an empty bin, the left end of the empty bin is provided with a discharging port which is communicated with the empty bin, the top end of the empty bin is communicated with the electromagnetic valve (6), the second motor (26) is installed at the right end of the discharging box (25), the output end of the second motor (26) is transversely provided with a conveying blade (27), and the conveying blade (27) is arranged in the empty bin.
5. The evaporative crystallization device for dichloropentachloromethylthiazole preparation according to claim 4, further comprising a plurality of sets of reinforcing members (28), wherein the plurality of sets of reinforcing members (28) are respectively arranged on the outer side wall of the supporting leg (1) and are used for fixing the tank body (2).
6. The evaporative crystallization device for dichloropentachloromethylthiazole preparation as claimed in claim 5, characterized by further comprising an automatic pressure relief valve (29), wherein the automatic pressure relief valve (29) is arranged on the outer side wall of the tank body (2) and is communicated with the chamber.
7. The evaporative crystallization device for the preparation of dichloro pentachloromethylthiazole as claimed in claim 6, further comprising an observation window (30), wherein the observation window (30) is arranged on the outer side wall of the tank body (2) and is communicated with the chamber.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022509599.5U CN213527518U (en) | 2020-11-03 | 2020-11-03 | Evaporation crystallization device for preparing dichloro pentachloromethyl thiazole |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022509599.5U CN213527518U (en) | 2020-11-03 | 2020-11-03 | Evaporation crystallization device for preparing dichloro pentachloromethyl thiazole |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113559530A (en) * | 2021-09-24 | 2021-10-29 | 江苏汉菱肥业有限责任公司 | Water-soluble fertilizer preparation evaporation concentration equipment |
| CN115107181A (en) * | 2022-08-23 | 2022-09-27 | 宿迁嘉禾塑料金属制品有限公司 | Preparation method of polyvinyl alcohol raw material of PVA collodion and special equipment used in preparation method |
| CN117618953A (en) * | 2024-01-25 | 2024-03-01 | 宿迁新亚科技有限公司 | N-methyl formamide dewatering device |
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2020
- 2020-11-03 CN CN202022509599.5U patent/CN213527518U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113559530A (en) * | 2021-09-24 | 2021-10-29 | 江苏汉菱肥业有限责任公司 | Water-soluble fertilizer preparation evaporation concentration equipment |
| CN113559530B (en) * | 2021-09-24 | 2021-12-07 | 江苏汉菱肥业有限责任公司 | Water-soluble fertilizer preparation evaporation concentration equipment |
| CN115107181A (en) * | 2022-08-23 | 2022-09-27 | 宿迁嘉禾塑料金属制品有限公司 | Preparation method of polyvinyl alcohol raw material of PVA collodion and special equipment used in preparation method |
| CN115107181B (en) * | 2022-08-23 | 2022-12-06 | 宿迁嘉禾塑料金属制品有限公司 | Preparation method of polyvinyl alcohol raw material of PVA collodion and special equipment used in preparation method |
| CN117618953A (en) * | 2024-01-25 | 2024-03-01 | 宿迁新亚科技有限公司 | N-methyl formamide dewatering device |
| CN117618953B (en) * | 2024-01-25 | 2024-04-05 | 宿迁新亚科技有限公司 | N-methyl formamide dewatering device |
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