Cyanamide desolventizing device

Abstract

The utility model discloses a cyanamide desolventizing device which comprises a reaction kettle, a rotating pipeline is rotatably connected in the reaction kettle, connecting rods are symmetrically and fixedly connected to the outer side of the rotating pipeline, a scraper blade is fixedly connected to one end of each connecting rod, and a square groove is formed in the reaction kettle and located on one side of the rotating pipeline. A square groove is formed in the reaction kettle, a mounting plate is slidably connected into the square groove, a push block is slidably connected into the mounting plate, a clamping block is fixedly connected to the outer side of the reaction kettle, and a clamping groove matched with the clamping block for use is formed in the push block. According to the cyanamide desolventizing device, the rotating pipeline can be rotated to drive the scraping plate to rotate through the connecting rod, purified water can be sprayed through the through holes in the rotating pipeline, and the inner side wall of the reaction kettle is comprehensively flushed and cleaned.

Description

Technical Field

[0001] The utility model relates to the technical field of calcium cyanamide production, in particular to a calcium cyanamide desolventizing device. Background Technique

[0002] Cyanamide, also known as calcium cyanamide, is an important intermediate in the production of dicyandiamide. Due to its highly active cyano and amino groups, it has advantages that dicyandiamide and melamine polycyanide do not have in the preparation of resin processing, pesticides, pharmaceuticals and chemical intermediates. Aqueous cyanamide solution also has special effects such as terminating dormancy, promoting germination, promoting flowering, killing insects and sterilizing, and has low residue and is easy to degrade.

[0003] The existing utility model patent with the application number: CN202122442209.1 proposes a condensation and dehydration device for the preparation of 50% calcium cyanamide aqueous solution. When in use, by using the inner shell arranged inside the reaction kettle, the inner side wall of the reaction kettle can form a double-layer structure. The double-layer structure has a certain heat preservation effect, and the cavity formed inside the double-layer structure is filled with heat preservation cotton, so that the double-layer structure has a very good heat preservation effect, so that the temperature can be stable and easy to control during the concentration and dehydration process of 30% calcium cyanamide aqueous solution, ensuring that it can be accurately concentrated and dehydrated into 50% calcium cyanamide aqueous solution, solving the problem that the temperature is not easy to control during concentration and dehydration.

[0004] The nozzle at the bottom of the inner ring pipe of the device in the above patent is arranged at the upper half of the inner side wall of the inner shell, and cannot wash the inner side wall of the inner shell comprehensively. Moreover, the purification box cannot be cleaned and replaced after purifying the hot air, reducing the practicability of the device. Therefore, a calcium cyanamide desolventizing device is provided to solve the above problems. Stirring work can accelerate the cooling of the medicinal materials during the stirring process Content of the Utility Model

[0005] In view of the deficiencies of the prior art, the utility model provides a calcium cyanamide desolventizing device to solve the problems raised in the above background technique:

[0006] The nozzle at the bottom of the inner ring pipe of the device is arranged at the upper half of the inner side wall of the inner shell, and cannot wash the inner side wall of the inner shell comprehensively. Moreover, the purification box cannot be cleaned and replaced after purifying the hot air, reducing the practicability of the device.

[0007] To achieve the above objectives, the utility model is realized through the following technical solutions:

[0008] A monocyanamide desolventizing device, comprising a reaction kettle, wherein a rotating pipe is rotatably connected inside the reaction kettle, connecting rods are symmetrically and fixedly connected to the outer side of the rotating pipe, a scraping plate is fixedly connected to one end of each connecting rod, a square groove is formed inside the reaction kettle and on one side of the rotating pipe, a mounting plate is slidably connected inside the square groove, a pushing block is slidably connected inside the mounting plate, a clamping block is fixedly connected to the outer side of the reaction kettle, and a clamping groove for cooperating with the clamping block is formed inside the pushing block. Hot air will enter the inside of the square groove, and the chemical substances contained in the hot air are filtered and adsorbed and removed by the filter screen and activated carbon net inside the mounting plate, which can greatly reduce the harm to the atmospheric environment. When it is necessary to disassemble and replace the mounting plate, the pushing block is pushed to compress the telescopic spring, and then the mounting plate can be pulled to drive the filter screen and activated carbon net to move out of the square groove. After the replacement is completed, the mounting plate is pushed into the square groove, the clamping block enters the clamping groove, and the pushing block limits and fixes the clamping block under the elastic force of the telescopic spring, enabling the mounting plate to be disassembled and replaced quickly. Finally, after the preparation is completed, the monocyanamide aqueous solution is taken out through the discharge port and stored in the corresponding container. Then, external pure water is conveyed to the rotating pipe through the rotary joint, and the through holes formed inside the rotating pipe will evenly spray the water on the inner side wall of the reaction kettle, thereby comprehensively flushing the inner side wall of the reaction kettle.

[0009] Preferably, a telescopic spring is fixedly connected inside the mounting plate, and the telescopic spring is fixedly connected to the pushing block. The clamping block enters the clamping groove, and the pushing block limits and fixes the clamping block under the elastic force of the telescopic spring, enabling the mounting plate to be disassembled and replaced quickly.

[0010] Preferably, a rotary joint is installed at the top of the rotating pipe, a driving motor is fixedly connected inside the reaction kettle, the output end of the driving motor is fixedly connected to a rotating shaft through a coupling, a first gear is fixedly connected to the outer side of the rotating shaft, a second gear is fixedly connected to the outer side of the rotating pipe, and the second gear is meshed with the first gear. The driving motor is started to drive the first gear to rotate through the rotating shaft, and the rotating pipe is driven to rotate under the cooperation of the first gear and the second gear. The rotating pipe drives the stirring blades and the scraping plates to rotate, thereby driving the rotating pipe to rotate.

[0011] Preferably, through holes are equidistantly formed inside the rotating pipe, and a stirring blade is fixedly connected to one side of the rotating pipe. External pure water is conveyed to the rotating pipe through the rotary joint, and the through holes formed inside the rotating pipe will evenly spray the water on the inner side wall of the reaction kettle, thereby comprehensively flushing the inner side wall of the reaction kettle. The rotating pipe drives the scraping plates to rotate through the connecting rods, eliminating the need for manual cleaning.

[0012] Preferably, a heat-insulating cotton is fixedly connected inside the reaction kettle. An inlet is provided above the heat-insulating cotton inside the reaction kettle. The aqueous solution of cyanamide is injected into the reaction kettle through the inlet, and then the corresponding concentrated stabilizing reagent is added, and the sealing cover is placed on the inlet for concentration and dehydration. The inside of the reaction kettle is filled with heat-insulating cotton, which can make the reaction kettle have a very good heat-insulating effect and make the temperature stable and easy to control during the concentration and dehydration process of the aqueous solution of cyanamide.

[0013] Preferably, a blower is fixedly connected inside the reaction kettle. The air outlet of the blower is communicated with the square groove through a connecting pipe. A filter screen and an activated carbon net are fixedly connected inside the mounting plate. When the blower is started and the sealing cover is opened, the blower will extract the hot air inside the reaction kettle, thereby accelerating the cooling of the aqueous solution of cyanamide. Then, the hot air extracted by the blower will enter the square groove, and the chemical substances contained in the hot air will be filtered and adsorbed by the filter screen and the activated carbon net inside the mounting plate, which can greatly reduce the harm to the atmospheric environment.

[0014] The utility model provides a cyanamide desolventizing device. Compared with the prior art, the following beneficial effects are achieved:

[0015] 1. In this cyanamide desolventizing device, through the arrangement of the rotating pipe and the scraper, the rotating pipe can be rotated to drive the scraper to rotate through the connecting rod, and the through holes inside the rotating pipe can spray pure water to comprehensively wash and clean the inner wall of the reaction kettle.

[0016] 2. In this cyanamide desolventizing device, through the arrangement of the clamping block, the pushing block and the telescopic spring, the mounting plate can be pushed into the reaction kettle, the clamping block enters the inside of the clamping groove, and the pushing block limits and fixes the clamping block under the elastic force of the telescopic spring, which can quickly disassemble and replace the mounting plate and improve the practicality of the device. Description of the Drawings

[0017] Figure 1 is the three-dimensional structure diagram of the utility model.

[0018] Figure 2 is the internal three-dimensional structure diagram of the utility model.

[0019] Figure 3 is the three-dimensional structure diagram of the stirring blade in the utility model.

[0020] Figure 4 is the enlarged three-dimensional structure diagram at A.

[0021] In the figure: 1, reaction kettle; 2, feed inlet; 3, drive motor; 4, rotating pipe; 5, heat preservation cotton; 6, connecting rod; 7, filter screen; 8, activated carbon net; 9, square groove; 10, fan; 11, stirring blade; 12, first gear; 13, rotating shaft; 14, rotary joint; 15, second gear; 16, scraper; 17, mounting plate; 18, telescopic spring; 19, clamping block; 20, clamping groove; 21, pushing block. Specific implementation mode

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0023] Please refer to Figures 1-4 , the present invention provides a technical solution: a calcium cyanamide desolventizing device, including a reaction kettle 1, a rotating pipe 4 is rotatably connected inside the reaction kettle 1, connecting rods 6 are symmetrically and fixedly connected to the outside of the rotating pipe 4, a scraper 16 is fixedly connected to one end of the connecting rod 6, a square groove 9 is opened inside the reaction kettle 1 and on one side of the rotating pipe 4, a mounting plate 17 is slidably connected inside the square groove 9, a pushing block 21 is slidably connected inside the mounting plate 17, a clamping block 19 is fixedly connected to the outside of the reaction kettle 1, a clamping groove 20 for cooperating with the clamping block 19 is opened inside the pushing block 21, hot air will enter the inside of the square groove 9, and the chemical substances contained in the hot air are filtered and adsorbed and removed by the filter screen 7 and the activated carbon net 8 inside the mounting plate 17, which can greatly reduce the harm to the atmospheric environment. When it is necessary to disassemble and replace the mounting plate 17, push the pushing block 21 to squeeze the telescopic spring 18, and then the mounting plate 17 can be pulled to drive the filter screen 7 and the activated carbon net 8 to move out of the inside of the square groove 9. After the replacement is completed, push the mounting plate 17 into the inside of the square groove 9, the clamping block 19 enters the inside of the clamping groove 20, and the pushing block 21 limits and fixes the clamping block 19 under the elastic force of the telescopic spring 18, which can quickly disassemble and replace the mounting plate 17. Finally, after the preparation is completed, the calcium cyanamide aqueous solution is taken out through the discharge port and stored in the corresponding container, and then the external pure water is conveyed to the rotating pipe 4 through the rotary joint 14, and the through holes opened inside the rotating pipe 4 will evenly spray the water on the inner side wall of the reaction kettle 1, so as to comprehensively wash the inner side wall of the reaction kettle 1.

[0024] Furthermore, a telescopic spring 18 is fixedly connected inside the mounting plate 17, the telescopic spring 18 is fixedly connected to the pushing block 21, the clamping block 19 enters the inside of the clamping groove 20, and the pushing block 21 limits and fixes the clamping block 19 under the elastic force of the telescopic spring 18, which can quickly disassemble and replace the mounting plate 17.

[0025] Further, a rotary joint 14 is installed at the top of the rotary pipe 4. A driving motor 3 is fixedly connected inside the reaction kettle 1. The output end of the driving motor 3 is fixedly connected with a rotating shaft 13 through a coupling. A first gear 12 is fixedly connected to the outer side of the rotating shaft 13. A second gear 15 is fixedly connected to the outer side of the rotary pipe 4. The second gear 15 is meshed with the first gear 12. Starting the driving motor 3 drives the first gear 12 to rotate through the rotating shaft 13. Under the cooperation of the first gear 12 and the second gear 15, the rotary pipe 4 is driven to rotate. The rotary pipe 4 drives the stirring blades 11 and the scraping plates 16 to rotate, thereby driving the rotary pipe 4 to rotate.

[0026] Further, through holes are equidistantly arranged inside the rotary pipe 4. A stirring blade 11 is fixedly connected to one side of the rotary pipe 4. External pure water is conveyed to the rotary pipe 4 through the rotary joint 14. The through holes arranged inside the rotary pipe 4 will evenly spray the water on the inner side wall of the reaction kettle 1, so as to comprehensively wash the inner side wall of the reaction kettle 1. The rotary pipe 4 drives the scraping plate 16 to rotate through the connecting rod 6, eliminating the need for manual cleaning.

[0027] Further, a heat-insulating cotton 5 is fixedly connected inside the reaction kettle 1. A feed inlet 2 is arranged inside the reaction kettle 1 and above the heat-insulating cotton 5. The monocyanamide aqueous solution is injected into the reaction kettle 1 through the feed inlet 2. Then the corresponding concentrated stabilizing reagent is added and the sealing cover is covered on the feed inlet 2 for concentration and dehydration. The inside of the reaction kettle 1 is filled with the heat-insulating cotton 5, so that the reaction kettle 1 has a very good heat-insulating effect, and the temperature during the concentration and dehydration process of the monocyanamide aqueous solution can be stable and easy to control.

[0028] Further, a blower 10 is fixedly connected inside the reaction kettle 1. The air outlet of the blower 10 is communicated with the square groove 9 through a connecting pipe. A filter screen 7 and an activated carbon mesh 8 are fixedly connected inside the mounting plate 17. Starting the blower 10 and opening the sealing cover, the blower 10 will extract the hot air inside the reaction kettle 1, thereby accelerating the cooling of the monocyanamide aqueous solution. Then the hot air extracted by the blower 10 will enter the inside of the square groove 9. The chemical substances contained in the hot air are filtered and adsorbed and removed by using the filter screen 7 and the activated carbon mesh 8 inside the mounting plate 17, which can greatly reduce the harm to the atmospheric environment.

[0029] During operation, the aqueous calcium cyanamide solution is injected into the interior of the reaction kettle 1 through the feed port 2. Then, the corresponding concentrated stabilizing reagent is added and the sealing cover is placed on the feed port 2 for concentration and dehydration. The interior of the reaction kettle 1 is filled with heat-insulating cotton 5, which can endow the reaction kettle 1 with very good heat-insulating effect, making the temperature during the concentration and dehydration process of the aqueous calcium cyanamide solution stable and easy to control. Next, after the concentration and dehydration are completed, the blower 10 is started and the sealing cover is opened. The blower 10 will extract the hot air inside the reaction kettle 1, thereby accelerating the cooling of the aqueous calcium cyanamide solution. Then, the hot air extracted by the blower 10 will enter the interior of the square groove 9, and the filter screen 7 and activated carbon mesh 8 inside the mounting plate 17 are used to filter and adsorb the chemical substances contained in the hot air, which can greatly reduce the harm to the atmospheric environment. When it is necessary to disassemble and replace the mounting plate 17, the push block 21 is pushed to squeeze the telescopic spring 18, and then the mounting plate 17 can be pulled to drive the filter screen 7 and activated carbon mesh 8 to move out of the interior of the square groove 9. After the replacement is completed, the mounting plate 17 is pushed into the interior of the square groove 9, the clamping block 19 enters the interior of the clamping groove 20, and the push block 21 limits and fixes the clamping block 19 under the elastic force of the telescopic spring 18, enabling the mounting plate 17 to be disassembled and replaced quickly. Finally, after the preparation is completed, the aqueous calcium cyanamide solution is taken out through the discharge port and stored in the corresponding container. Then, the external pure water is conveyed to the rotating pipe 4 through the rotary joint 14. The through holes formed inside the rotating pipe 4 will evenly spray the water on the inner side wall of the reaction kettle 1, thereby comprehensively flushing the inner side wall of the reaction kettle 1. The rotating pipe 4 drives the scraping plate 16 to rotate through the connecting rod 6, eliminating the need for manual cleaning and improving the practicality of the device.

[0030] Meanwhile, the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0031] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising a..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the element.

[0032] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A dicyandiamide stripping device, comprising a reaction kettle (1), characterized in that: Inside the reactor (1), a rotating pipe (4) is rotatably connected. Symmetrically fixed to the outside of the rotating pipe (4) are connecting rods (6). One end of the connecting rod (6) is fixedly connected to a scraper (16). Inside the reactor (1) and on one side of the rotating pipe (4), a square groove (9) is provided. Inside the square groove (9), a mounting plate (17) is slidably connected. Inside the mounting plate (17), a pushing block (21) is slidably connected. Fixed to the outside of the reactor (1) is a clamping block (19). Inside the pushing block (21), a clamping groove (20) is provided for cooperating with the clamping block (19).

2. The monocyanamide desolventizing device according to claim 1, wherein: Inside the mounting plate (17), a telescopic spring (18) is fixedly connected. The telescopic spring (18) is fixedly connected to the pushing block (21).

3. A cyanamide desolventizing device according to claim 1, characterized in that: At the top of the rotating pipe (4), a rotary joint (14) is installed. Inside the reactor (1), a driving motor (3) is fixedly connected. The output end of the driving motor (3) is fixedly connected to a rotating shaft (13) through a coupling. Fixed to the outside of the rotating shaft (13) is a first gear (12). Fixed to the outside of the rotating pipe (4) is a second gear (15). The second gear (15) is meshed with the first gear (12).

4. A cyanamide desolventizing device according to claim 1, characterized in that: Inside the rotating pipe (4), through holes are equidistantly provided. Fixed to one side of the rotating pipe (4) is a stirring blade (11).

5. The monocyanamide desolventizing device according to claim 1, wherein: Inside the reactor (1), a heat-insulating cotton (5) is fixedly connected. Above the heat-insulating cotton (5) inside the reactor (1), a feed inlet (2) is provided.

6. The monocyanamide desolventizing device according to claim 1, wherein: Inside the reactor (1), a blower (10) is fixedly connected. The air outlet of the blower (10) is communicated with the square groove (9) through a connecting pipe. Inside the mounting plate (17), a filter screen (7) and an activated carbon mesh (8) are fixedly connected.

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