Crystallization device for producing O-methyl-N-methyl-N-nitroisourea

Abstract

The utility model discloses a crystallization device for producing O-methyl-N-methyl-N-nitroisourea, and relates to chemical equipment. A devitrification device for producing O-methyl-N-methyl-N-nitroisourea comprises a devitrification barrel, a main body of the devitrification barrel is of a barrel-shaped structure with a one-way opening in the top end, a bottom plate is fixedly connected to the bottom end face of the devitrification barrel, a main body of the bottom plate is of a rectangular structure, through holes are formed in the bottom plate, the through holes are installing holes, the number of the installing holes is four, and the installing holes are communicated with the bottom plate. The four mounting holes are formed in the four corners of the interior of the bottom plate correspondingly, a temperature detector is fixedly connected to the interior of the crystallization barrel, and a main body of the temperature detector is an industrial temperature sensor. According to the utility model, the purpose of quickly and stably taking out the crystallized substance can be realized, the labor intensity can be reduced, and the crystallization efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to chemical equipment, in particular to a crystallization device for producing O-methyl-N-methyl-N-nitroisourea. Background Art

[0002] O-Methyl-N-methyl-N-nitroisourea is an important pharmaceutical intermediate and an important intermediate in pesticide production. It can be widely used in clothianidin, dinotefuran, etc.

[0003] In the production process of O-methyl-N-methyl-N-nitroisourea, a reactor is required to be used for crystallization. Patent Publication No. CN219023310U discloses a crystallization device for the production of O-methyl-N-methyl-N-nitroisourea, including a reaction box, a stirring telescopic frame is provided inside the reaction box, the stirring telescopic frame is composed of two cross-shear arms, and the two cross-shear arms are respectively hinged with the control structure and the fixed block through a pin, the fixed block is fixedly connected to the bottom of the support plate, and the top of the support plate is fixedly connected to the drive assembly. When the crystallization device of this structure is taking materials, the electric push rod is controlled to push the sealing cover upward to separate the reaction box, and then the stirring telescopic frame is controlled to shrink upward by the control structure, so that the area of ​​the stirring telescopic frame can be greatly reduced, thereby effectively avoiding the problem that the stirring telescopic frame is difficult to take out the crystals in the reaction box due to the expansion of the stirring telescopic frame. However, when the utility model is used, it is still impossible to quickly take out the crystals produced in the current crystallization process, and it is still necessary to manually go deep into the cylinder to take them out, which has the problems of high labor intensity and low crystallization efficiency.

[0004] In order to solve the above problems existing in the prior art, a crystallization device for producing O-methyl-N-methyl-N-nitroisourea was developed. Utility Model Content

[0005] The utility model aims to provide a crystallization device for producing O-methyl-N-methyl-N-nitroisourea, so as to solve the problems that the prior art cannot quickly take out the crystals, the manual taking out is labor-intensive and the efficiency is low.

[0006] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] A crystallization device for producing O-methyl-N-methyl-N-nitroisourea comprises a crystallization barrel, wherein the main body of the crystallization barrel is a barrel-shaped structure with a one-way opening at the top, and a bottom plate is fixedly connected to the bottom end surface of the crystallization barrel, the main body of the bottom plate is a rectangular structure, and a through hole is opened inside the bottom plate, the through hole is a mounting hole, and there are four mounting holes in total, and the four mounting holes are respectively opened at the four corners inside the bottom plate, and a temperature detector is fixedly connected inside the crystallization barrel, and the main body of the temperature detector is an industrial temperature sensor.

[0008] Furthermore, a through hole is opened on the outer circumferential surface of the crystallization barrel, and a discharge pipe is fixedly connected to the inside of the through hole. The discharge pipe is communicated with the crystallization barrel, and a solenoid valve is installed inside the discharge pipe, and a flange is fixedly connected to the side of the discharge pipe away from the crystallization barrel.

[0009] The top of the crystallization barrel is covered by a cover plate, and a circular plug is fixedly connected to the bottom end surface of the cover plate. The diameter of the plug is consistent with the inner wall of the crystallization barrel, and the cover plate is used to seal the top opening of the crystallization barrel.

[0010] A lifting ring is fixedly connected to the top end surface of the cover plate, the main body of the lifting ring is an annular structure, and the lifting ring and the cover plate together form a taking-out structure, and a guide rail is fixedly connected to the bottom end surface of the cover plate.

[0011] The main body of the guide rail is arranged longitudinally, and the guide rail and the cover plate are arranged vertically. There are two guide rails in total, and the two guide rails are fixedly connected to the left and right sides of the bottom end surface of the cover plate in a linear array.

[0012] The outer side of the guide rail is fixedly connected with a slider, and the front and rear sides of each guide rail are fixedly connected with a slider. The guide rail is slidably connected in the longitudinal groove opened in the crystallization barrel through the slider fixedly connected on the outer side of the guide rail.

[0013] The inner sides of the two guide rails are also fixedly connected with a mounting plate, the main body of the mounting plate is an annular structure, and the bottom end of the inner wall of the mounting plate is fixedly connected with a substrate, the main body of the substrate is an annular structure, and the top end surface of the substrate is fixedly connected with guide pillars in an annular array, a seat body is installed above the guide pillars and the substrate, and a crystallization plate is fixedly connected to the inside of the seat body.

[0014] When the crystallization of the crystallization material is completed, the base body can be removed from the base plate and the mounting plate, and the material can be gathered after the crystallization plate fixedly connected in the base body is taken out separately, so as to achieve the purpose of improving the crystallization efficiency; by arranging two guide rails and a slider structure on the bottom end surface of the cover plate, when the cover plate is removed from the top of the crystallization barrel, the guide rail and the slider are used to move and expand along the longitudinal groove opened in the crystallization barrel to achieve stability when the crystallization plate is taken out.

[0015] Compared with the prior art, the utility model can achieve the purpose of quickly and stably taking out the crystallized material, can reduce labor intensity and improve crystallization efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the front and side view of the crystallization device of the utility model after partial structure is cut away;

[0017] Figure 2It is a schematic diagram of the combined structure of the crystallization device of the utility model;

[0018] Figure 3 It is a schematic diagram of the combined structure of the crystallization barrel and the bottom plate of the crystallization device of the utility model;

[0019] Figure 4 This is a schematic diagram of the combined structure of the guide rail and the slider of the crystallization device of the utility model;

[0020] Figure 5 It is a schematic diagram of the combined structure of the base body and the crystallization disk of the crystallization device of the utility model;

[0021] Figure 6 It is a schematic diagram of the top view of the crystallization device of the utility model.

[0022] In the figure: 1. crystallization barrel; 101. bottom plate; 102. mounting hole; 103. temperature detector; 104. discharge pipe; 105. flange; 2. cover plate; 201. lifting ring; 202. guide rail; 203. slider; 3. mounting plate; 301. base plate; 302. guide column; 303. seat; 304. crystallization plate. 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 of 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] like Figure 1-6 A crystallization device for producing O-methyl-N-methyl-N-nitroisourea is shown, comprising a crystallization barrel 1, the main body of the crystallization barrel 1 is a barrel-shaped structure with a one-way opening at the top, and a bottom plate 101 is fixedly connected to the bottom end surface of the crystallization barrel 1, the main body of the bottom plate 101 is a rectangular structure, and a through hole is opened inside the bottom plate 101, which is a mounting hole 102. There are four mounting holes 102 in total, and the four mounting holes 102 are respectively opened at the four corners of the bottom plate 101, and a thermometer 103 is fixedly connected to the inside of the crystallization barrel 1, and the main body of the thermometer 103 is an industrial temperature sensor. During operation, the thermometer 103 is fixedly connected to the inside of the crystallization barrel 1, so that when it is used, it can realize the identification and judgment of the current temperature in the crystallization barrel 1, thereby achieving a more practical purpose.

[0025] The inner sides of the two guide rails 202 are also fixedly connected with a mounting disk 3, the main body of the mounting disk 3 is an annular structure, and the bottom end of the inner wall of the mounting disk 3 is fixedly connected with a base plate 301, the main body of the base plate 301 is an annular structure, and the top end surface of the base plate 301 is fixedly connected with guide posts 302 in an annular array, a seat body 303 is installed above the guide posts 302 and the base plate 301, and a crystallization disk 304 is fixedly connected to the inside of the seat body 303; by fixing the crystallization disk 304 to the inside of the seat body 303, the crystallization disk 304 can be collected when it is in use.

[0026] A slider 203 is fixedly connected to the outer side of the guide rail 202, and a slider 203 is fixedly connected to the front and rear sides of each guide rail 202. The guide rail 202 is slidably connected to the longitudinal groove opened in the crystallization barrel 1 through the slider 203 fixedly connected on its outer side; by fixing the slider 203 on the outer side of the guide rail 202, when it is in use, the guide rail 202 can be moved along the crystallization barrel 1 by using the slider 203 fixedly connected on its outer side.

[0027] The top of the crystallization barrel 1 is covered by a cover plate 2, and a circular plug is fixedly connected to the bottom end surface of the cover plate 2. The diameter of the plug is consistent with the inner wall of the crystallization barrel 1, and the cover plate 2 is used to seal the top opening of the crystallization barrel 1; by installing the cover plate 2 on the top surface of the crystallization barrel 1, the top opening of the crystallization barrel 1 can be sealed when it is in use.

[0028] A through hole is opened on the outer peripheral surface of the crystallization barrel 1, and a discharge pipe 104 is fixedly connected to the inside of the through hole. The discharge pipe 104 is connected to the crystallization barrel 1, and a solenoid valve is installed inside the discharge pipe 104, and a flange 105 is fixedly connected to the side of the discharge pipe 104 away from the crystallization barrel 1; by installing a solenoid valve inside the discharge pipe 104, the liquid flow in the crystallization barrel 1 can be controlled when it is in use.

[0029] A lifting ring 201 is fixedly connected to the top surface of the cover plate 2, the main body of the lifting ring 201 is a ring structure, and the lifting ring 201 and the cover plate 2 together constitute a removal structure, and a guide rail 202 is fixedly connected to the bottom surface of the cover plate 2; by fixing the lifting ring 201 on the top surface of the cover plate 2, it is easier to take out the cover plate 2 when it is in use.

[0030] The main body of the guide rail 202 is arranged longitudinally, and the guide rail 202 and the cover plate 2 are arranged perpendicularly. There are two guide rails 202 in total, and the two guide rails 202 are fixedly connected in a linear array at the left and right sides of the bottom end surface of the cover plate 2; by fixing the guide rail 202 on the bottom end surface of the cover plate 2, the cover plate 2 can be more stably guided by the guide rail 202 when being taken out.

[0031] During operation, when O-methyl-N-methyl-N-nitroisourea is produced, the O-methyl-N-methyl-N-nitroisourea production liquid can be put into the crystallization barrel 1 through the top opening, and the bottom plate 101 is simultaneously passed through the fixing bolt through the mounting hole 102 provided therein to realize the rapid positioning connection of the crystallization barrel 1, and the external heating device is simultaneously used to heat the current crystallization barrel 1 and the material in the crystallization barrel 1, and the temperature detector 103 provided in the crystallization barrel 1 is simultaneously used to continuously monitor the temperature in the crystallization barrel 1;

[0032] When in use, after the crystallization is completed, the cover plate 2 can be lifted by connecting the traction machinery with the lifting ring 201 fixedly connected to the top surface of the cover plate 2, and synchronously starting the external lifting machinery, and when the cover plate 2 is lifted, it can be moved upward along the longitudinal groove opened in the crystallization barrel 1 through the guide rail 202 and the slider 203 fixedly connected on its bottom surface, and the seat body 303 and the crystallization plate 304 can be taken out from the base plate 301 and the guide column 302.

[0033] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. A crystallization device for producing O-methyl-N-methyl-N-nitroisourea, comprising a crystallization barrel (1), characterized in that: The main body of the crystallization barrel (1) is a barrel-shaped structure with a one-way opening at the top, and a bottom plate (101) is fixedly connected to the bottom end surface of the crystallization barrel (1), the main body of the bottom plate (101) is a rectangular structure, and a through hole is opened inside the bottom plate (101), and the through hole is a mounting hole (102). There are four mounting holes (102) in total, and the four mounting holes (102) are respectively opened at the four corners inside the bottom plate (101), and a temperature detector (103) is fixedly connected inside the crystallization barrel (1), and the main body of the temperature detector (103) is an industrial temperature sensor; The top of the crystallization barrel (1) is covered with a cover plate (2), and a circular plug is fixedly connected to the bottom end surface of the cover plate (2), and the diameter of the plug is consistent with the inner wall diameter of the crystallization barrel (1). A lifting ring (201) is fixedly connected to the top end surface of the cover plate (2), and the main body of the lifting ring (201) is an annular structure, and the lifting ring (201) and the cover plate (2) together form a removal structure. A guide rail (202) is fixedly connected to the bottom end surface of the cover plate (2); the main body of the guide rail (202) is arranged longitudinally, and the guide rail (202) and the cover plate (2) are arranged vertically. The guide rail (202) is provided at two locations, and the two guide rails (202) are fixedly connected to the left and right sides of the bottom end surface of the cover plate (2) in a linear array; the outer side of the guide rail (202) is fixedly connected A slider (203) is provided, and the sliders (203) are fixedly connected to the front and rear sides of each guide rail (202), and the guide rail (202) is slidably connected to a longitudinal groove provided in the crystallization barrel (1) through the sliders (203) fixedly connected to the outer surface thereof; the inner sides of the two guide rails (202) are also fixedly connected to a mounting plate (3), the main body of the mounting plate (3) is an annular structure, and the bottom end of the inner wall of the mounting plate (3) is fixedly connected to a base plate (301), the main body of the base plate (301) is an annular structure, and the top surface of the base plate (301) is fixedly connected to guide posts (302) in an annular array, a seat body (303) is installed above the guide posts (302) and the base plate (301), and the inside of the seat body (303) is fixedly connected to a crystallization plate (304).

2. A crystallization device for producing O-methyl-N-methyl-N-nitroisourea according to claim 1, characterized in that: A through hole is provided on the outer peripheral surface of the crystallization barrel (1), a discharge pipe (104) is fixedly connected to the interior of the through hole, the discharge pipe (104) is connected to the crystallization barrel (1), a solenoid valve is installed inside the discharge pipe (104), and a flange (105) is fixedly connected to the side of the discharge pipe (104) away from the crystallization barrel (1).

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