Concentration reaction kettle for preparing 2, 4-diaminopyrimidine-3-oxide

Abstract

The utility model relates to a 2, 4-diaminopyrimidine-3-oxide preparation concentration reaction kettle, which belongs to the technical field of 2, 4-diaminopyrimidine-3-oxide preparation, and comprises a reaction kettle main body and a cover plate, the lower end of the cover plate is provided with a stirring assembly, the top of the cover plate is fixedly provided with two multi-stage electric push rods, and the two multi-stage electric push rods are connected with the stirring assembly. Vertical rods are fixed to the output ends of the two multi-stage electric push rods, scraping rings are fixed to the lower ends of the two vertical rods, and a scraping assembly is arranged on the inner sides of the scraping rings and comprises two L-shaped plates slidably connected with the top ends of the scraping rings. According to the concentration reaction kettle for preparing 2, 4-diaminopyrimidine-3-oxide, the scraping ring is tightly attached to the inner wall of the tank body and moves vertically, a viscous mixed material is scraped off from the inner wall of the tank body and discharged from the discharging pipe, and oxide adhered to the inner side wall and the lower end of the scraping ring can be scraped off through the scraping assembly, so that the oxide remaining on the scraping ring can be treated, and the concentration reaction kettle is simple in structure, convenient to operate and high in practicability. And the waste of the 2, 4-diaminopyrimidine-3-oxide can be further reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of 2,4-diaminopyrimidine-3-oxide preparation, in particular to a 2,4-diaminopyrimidine-3-oxide preparation and concentration reaction kettle. Background Art

[0002] 2,4-Diaminopyrimidine-3-oxide is a heterocyclic organic compound that can be used as a pharmaceutical intermediate and is also a new type of anti-hair loss and hair growth active substance. Its molecular formula is C4H6N4O, and its properties are white to off-white powder. The reactor is a container for physical or chemical reactions. The heating, evaporation, cooling and low-speed mixing functions required by the process are achieved through the structural design and parameter configuration of the container.

[0003] During the preparation and processing of 2,4-diaminopyrimidine-3-oxide, it needs to be processed and concentrated by a reactor. Since the concentration of 2,4-diaminopyrimidine-3-oxide increases after the concentration reaction, some of the materials will adhere to the inner wall, which makes it inconvenient to discharge 2,4-diaminopyrimidine-3-oxide from the reactor. A Chinese patent (Announcement No.: CN 220589999 U) discloses a concentration reactor for the production of citicoline sodium. During unloading, a scraper ring moves vertically close to the inner wall of the tank under the action of a cylinder, and scrapes the viscous mixed material from the inner wall of the tank to discharge it from a discharge pipe, thereby solving the problem of difficulty in unloading viscous materials and making it very convenient to use.

[0004] However, in the above document, when the scraper ring pushes the 2,4-diaminopyrimidine-3-oxide after the concentration reaction, part of the 2,4-diaminopyrimidine-3-oxide will stick to the scraper ring, which is inconvenient to handle the remaining adhered material and will also cause a certain amount of waste of 2,4-diaminopyrimidine-3-oxide. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a 2,4-diaminopyrimidine-3-oxide preparation and concentration reaction kettle, which has the advantages of being easy to handle and solves the problem of inconvenient handling.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a 2,4-diaminopyrimidine-3-oxide preparation and concentration reactor, comprising a reactor body and a cover plate, a stirring assembly is provided at the lower end of the cover plate, two multi-stage electric push rods are fixed on the top of the cover plate, vertical rods are fixed at the output ends of the two multi-stage electric push rods, scraping rings are fixed at the lower ends of the two vertical rods, and a scraping assembly is provided on the inner side of the scraping ring;

[0007] The scraper assembly includes two L-shaped plates slidably connected to the top of the scraper ring, and the scrapers are fixed on the inner walls opposite to each other of the two L-shaped plates. The scraper assembly also includes an inner gear ring fixed inside the scraper ring, and two gears are meshed on the inner side of the inner gear ring. Support blocks are fixed on the inner sides of the two gears. The scraper assembly also includes a connecting rotating assembly arranged on the inner sides of the two support blocks.

[0008] Furthermore, the connecting and rotating assembly includes a connecting rod fixed to the top of the inner side of the two L-shaped plates, the connecting and rotating assembly also includes a slider fixed to the lower ends of the two support blocks, the connecting and rotating assembly also includes two micro motors fixed to the top of the inner side of the two support blocks, the connecting and rotating assembly also includes a first transmission tooth fixed to the outside of the two support blocks, and a second transmission tooth is fixed to the output end of the micro motor.

[0009] Furthermore, an annular sliding hole is provided at the top of the scraping ring, and the two connecting rods are slidably connected to the inside of the annular sliding hole.

[0010] Furthermore, an annular sliding groove is provided at the bottom of the inner cavity of the scraper ring, and the two sliding blocks are both located inside the annular sliding groove and are slidably connected thereto.

[0011] Furthermore, two through holes are formed on the top of the cover plate, and the multi-stage electric push rod is located inside the through holes and fixed thereto.

[0012] Furthermore, the stirring assembly includes a driving motor fixed to the top end of the cover plate, a stirring rod fixed to the output end of the driving motor, and a plurality of stirring blades fixed to the outer surface of the stirring rod.

[0013] Furthermore, a circular hole is provided on the top of the cover plate, and the stirring rod is rotatably connected to the inner side of the circular hole.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] The 2,4-diaminopyrimidine-3-oxide preparation and concentration reactor has a scraper ring that moves vertically close to the inner wall of the tank body to scrape off the viscous mixed material from the inner wall of the tank body to discharge it from a discharge pipe. The scraper assembly can scrape off the oxide adhering to the inner wall and the lower end of the scraper ring so that the oxide remaining on the scraper ring can be processed, thereby further reducing the waste of 2,4-diaminopyrimidine-3-oxide. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the reactor of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the hanging ring and the vertical rod of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the L-shaped plate and the hanging ring of the utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the internal gear ring and the gear of the utility model;

[0021] Figure 6 It is a structural schematic diagram of the connecting rod and the supporting block of the utility model.

[0022] In the figure: 1 reactor body, 2 cover plate, 3 stirring assembly, 41 multi-stage electric push rod, 42 vertical rod, 43 hanging ring, 51 L-shaped plate, 52 scraper, 53 inner gear ring, 54 gear, 55 support block, 56 connecting rod, 57 slider, 58 micro motor, 59 first transmission tooth, 510 second transmission tooth. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-3 A 2,4-diaminopyrimidine-3-oxide preparation and concentration reactor in this embodiment includes a reactor body 1 and a cover plate 2. A stirring assembly 3 is provided at the lower end of the cover plate 2. Two multi-stage electric push rods 41 are fixed to the top of the cover plate 2. Vertical rods 42 are fixed to the output ends of the two multi-stage electric push rods 41. Scraping rings 43 are fixed to the lower ends of the two vertical rods 42. A scraping assembly is provided on the inner side of the scraping ring 43.

[0025] Among them, two through holes are opened on the top of the cover plate 2, and the multi-stage electric push rod 41 is located on the inner side of the through hole and fixed thereto, so that the multi-stage electric push rod 41 can be connected and fixed with the vertical rod 42, so that the two multi-stage electric push rods 41 can move up and down in the inner cavity of the reactor body 1 through the two vertical rods 42, so that the scraping ring 43 can scrape off the oxide adhering to the inner cavity wall of the reactor body 1.

[0026] In addition, the stirring assembly 3 includes a driving motor fixed to the top of the cover plate 2, a stirring rod is fixed to the output end of the driving motor, a plurality of stirring blades are fixed to the outer surface of the stirring rod, and a circular hole is opened on the top of the cover plate 2. The stirring rod is rotatably connected to the inner side of the circular hole, so as to stir the oxide in the reactor body 1.

[0027] See also Figure 3-6 The scraper assembly in this embodiment includes two L-shaped plates 51 slidably connected to the top of the scraper ring 43, and a scraper 52 is fixed on the inner wall opposite to the inner wall of the two L-shaped plates 51. The scraper assembly also includes an inner gear ring 53 fixed inside the scraper ring 43, and two gears 54 are meshed on the inner side of the inner gear ring 53. Support blocks 55 are fixed on the inner sides of the two gears 54. The scraper assembly also includes a connecting rotating assembly arranged on the inner sides of the two support blocks 55.

[0028] At the same time, the top ends of the two scrapers 52 abut against the lower end of the scraping ring 43, and the inner walls of the two L-shaped plates 51 can abut against the inner walls of the scraping ring 43, so that the two scrapers 52 can scrape off the oxide adhered to the lower end of the scraping ring 43, and the two L-shaped plates 51 can also scrape off the oxide adhered to the inner wall of the scraping ring 43, which can further reduce the waste of oxide.

[0029] See also Figure 6 The connecting and rotating assembly in this embodiment includes a connecting rod 56 fixed to the top of the inner side of the two L-shaped plates 51, the connecting and rotating assembly also includes a slider 57 fixed to the lower ends of the two support blocks 55, the connecting and rotating assembly also includes two micro motors 58 fixed to the top of the inner side of the two support blocks 55, the connecting and rotating assembly also includes a first transmission tooth 59 fixed to the outside of the two support blocks 55, and the support block 55 is an I-shaped round block, and a second transmission tooth 510 is fixed to the output end of the micro motor 58.

[0030] Secondly, an annular sliding hole is opened at the top of the scraping ring 43, and two connecting rods 56 are slidably connected to the inside of the annular sliding hole, so that the two connecting rods 56 can be connected to the two L-shaped plates 51, so that when the support block 55 rotates inside the scraping ring 43, the support block 55 can drive the L-shaped plate 51 to rotate through the connecting rod 56.

[0031] In addition, an annular groove is provided at the bottom of the inner cavity of the scraper ring 43 , and the two sliders 57 are both located inside the annular groove and slidably connected thereto, so that the support block 55 can rotate stably and smoothly inside the scraper ring 43 .

[0032] It should be noted that the stirring assembly 3, the multi-stage electric push rod 41 and the electronic components appearing in the text are all commonly known to the public in the prior art and the control method of the present embodiment is controlled by a controller. The control circuit of the controller can be implemented by simple programming by technicians in this field, and the provision of power is also well known in the art. Therefore, the present invention no longer explains the control method and circuit connection in detail, and therefore the working principle is no longer described in detail in the text.

[0033] The working principle of the above embodiment is:

[0034] When in use, when 2,4-diaminopyrimidine-3-oxide is discharged from the reactor body 1, the two multi-stage electric push rods 41 drive the scraper ring 43 to move up and down inside the reactor body 1 through the two vertical rods 42, so that the scraper ring 43 can scrape off the oxide adhering to the inner wall of the reactor body 1. When the amount of oxide discharged gradually decreases, the staff controls the two micro motors 58 to work through the control end, so that the output end of the micro motor 58 drives the first transmission tooth 59 to rotate, so that it can mesh with the second transmission tooth 510. , so that the second transmission tooth 510 can drive the support block 55 to rotate, and the two support blocks 55 can drive the two gears 54 to rotate. The two gears 54 are meshed with the inner side of the inner gear ring 53, so that the two support blocks 55 can drive the two L-shaped plates 51 to rotate on the inner wall of the scraper ring 43 through the connecting rod 56. The two L-shaped plates 51 can scrape off the cyanide adhered to the inner wall of the scraper ring 43. When the L-shaped plates 51 rotate, the scraper 52 can scrape off the oxide adhered to the lower end of the scraper ring 43, which can reduce the waste of oxides.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A 2,4-diaminopyrimidine-3-oxide preparation and concentration reactor, comprising a reactor body (1) and a cover plate (2), characterized in that: A stirring assembly (3) is provided at the lower end of the cover plate (2), two multi-stage electric push rods (41) are fixed on the top of the cover plate (2), vertical rods (42) are fixed at the output ends of the two multi-stage electric push rods (41), scraping rings (43) are fixed at the lower ends of the two vertical rods (42), and a scraping assembly is provided on the inner side of the scraping ring (43); The scraper assembly comprises two L-shaped plates (51) slidably connected to the top of the scraper ring (43), and a scraper plate (52) is fixed to the inner wall opposite to the inner wall of the two L-shaped plates (51). The scraper assembly also comprises an inner gear ring (53) fixed inside the scraper ring (43), and two gears (54) are meshed on the inner side of the inner gear ring (53). Support blocks (55) are fixed on the inner sides of the two gears (54). The scraper assembly also comprises a connecting rotating assembly arranged on the inner sides of the two support blocks (55).

2. A 2,4-diaminopyrimidine-3-oxide preparation and concentration reactor according to claim 1, characterized in that: The connecting and rotating assembly comprises a connecting rod (56) fixed to the top of the inner side of the two L-shaped plates (51), the connecting and rotating assembly further comprises a sliding block (57) fixed to the lower ends of the two supporting blocks (55), the connecting and rotating assembly further comprises two micro motors (58) fixed to the top of the inner side of the two supporting blocks (55), the connecting and rotating assembly further comprises a first transmission tooth (59) fixed to the outside of the two supporting blocks (55), and a second transmission tooth (510) is fixed to the output end of the micro motor (58).

3. A 2,4-diaminopyrimidine-3-oxide preparation and concentration reactor according to claim 2, characterized in that: An annular sliding hole is provided at the top end of the scraping ring (43), and the two connecting rods (56) are slidably connected inside the annular sliding hole.

4. A 2,4-diaminopyrimidine-3-oxide preparation and concentration reactor according to claim 2, characterized in that: An annular sliding groove is provided at the bottom of the inner cavity of the scraper ring (43), and the two sliding blocks (57) are both located inside the annular sliding groove and are slidably connected thereto.

5. A 2,4-diaminopyrimidine-3-oxide preparation and concentration reactor according to claim 1, characterized in that: The top of the cover plate (2) is provided with two through holes, and the multi-stage electric push rod (41) is located inside the through holes and is fixed thereto.

6. A 2,4-diaminopyrimidine-3-oxide preparation and concentration reactor according to claim 1, characterized in that: The stirring assembly (3) comprises a driving motor fixed to the top end of the cover plate (2), a stirring rod fixed to the output end of the driving motor, and a plurality of stirring blades fixed to the outer surface of the stirring rod.

7. A 2,4-diaminopyrimidine-3-oxide preparation and concentration reactor according to claim 6, characterized in that: A circular hole is provided on the top of the cover plate (2), and the stirring rod is rotatably connected to the inner side of the circular hole.

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