P-toluamide purification system

Abstract

The utility model relates to the technical field of industrial production of amide, in particular to a p-toluamide purification system which comprises a motor, a conversion assembly, a first centrifuge, a second centrifugal assembly, a purification kettle assembly and a vibration assembly. According to the para-toluamide purification device, the motor drives the first centrifuge to work when rotating, para-toluamide is added into the first centrifuge, para-toluamide is preliminarily purified through the centrifugal effect of the first centrifuge, particles with large diameters are separated out, meanwhile, the rotating direction of the second centrifugal assembly is opposite to that of the first centrifuge, and therefore the para-toluamide purification effect is improved. According to the para-toluamide purification device, the first centrifugal assembly and the second centrifugal assembly are arranged, para-toluamide filtered for the first time enters the second centrifugal assembly to be purified for the second time, meanwhile, part of para-toluamide adheres to the vibration assembly, the vibration assembly is arranged so that para-toluamide adhering to the vibration assembly can fall off more easily, and the purified para-toluamide can be collected conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial production of amides, in particular to a p-toluamide purification system. Background Art

[0002] p-Toluenesulfonamide is an extremely important intermediate for organic synthesis drugs, and is commonly used in the synthesis of dozens of drugs such as combined chloramphenicol, chloramphenicol-T, thiamphenicol, etc. The existing mature p-toluenesulfonamide production process uses an intermittent reactor, p-toluenesulfonyl chloride as the raw material, mixed with 20% ammonia water, and 2.5 times the mass of water of p-toluenesulfonyl chloride is added, and the temperature is raised to 55°C for 2 hours, then raised to 65°C for 2 hours, then raised to 75°C for 2 hours, and finally raised to 95°C for 1 hour. After the reaction is completed, cooling and filtering, the existing purification system has the following main disadvantages:

[0003] In the existing purification system, a small amount of finished product exists on the inner wall of the purification kettle after centrifugation, which causes certain waste. In addition, the p-toluamide obtained after one centrifugation has low purity and poor product quality.

[0004] In view of the above problems, a p-toluamide purification system is now provided. Utility Model Content

[0005] The utility model aims to provide a p-toluamide purification system to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] Provided is a paratoluamide purification system, comprising a motor, a conversion component, a first centrifuge, a second centrifugal component, a purification kettle component and a vibration component, wherein the output end of the motor is fixedly connected to one end of the second centrifugal component, the output end of the motor is fixedly connected to one end of the conversion component, the other end of the conversion component is fixedly connected to the first centrifuge, the first centrifuge is rotatably connected to the second centrifugal component, the second centrifugal component is arranged in the purification kettle component, and the vibration component is arranged in the purification kettle component.

[0008] Furthermore, the conversion assembly includes a first rotating shaft, a protective shell and three bevel gears, one of the bevel gears is fixedly connected to one end of the second centrifugal assembly, one of the bevel gears is fixedly connected to the first centrifuge, and another bevel gear is meshed with two bevel gears. The first rotating shaft is fixedly connected to the bevel gears, one end of the first rotating shaft is rotatably connected to the protective shell, and the three bevel gears are arranged in the protective shell.

[0009] Furthermore, the second centrifugal assembly includes a second rotating shaft, a centrifugal bucket and a push rod, one end of the second rotating shaft is fixedly connected to the motor and a bevel gear, the second rotating shaft is rotationally connected to the first centrifuge, the push rod is fixedly connected to the other end of the second rotating shaft, and the second rotating shaft is fixedly connected to the bottom of the centrifugal bucket.

[0010] Furthermore, the vibration assembly includes two vibration rings, a guide shaft and a spring. The vibration ring is arranged in the purification kettle assembly, one end of the guide shaft is fixed in the purification kettle assembly, one end of the spring is fixedly connected to the vibration ring, and the other end of the spring is fixedly connected to the guide shaft.

[0011] Furthermore, the vibration ring is provided with a plurality of hemispherical grooves, and both ends of the push rod are provided with hemispherical blocks, and the positions of the hemispherical blocks correspond to the hemispherical grooves.

[0012] Furthermore, the purification kettle assembly includes a body and a cover, the cover is fixed on the top of the body, a discharge port is provided at the lower end of the body, a feed port is provided on the cover, and activated carbon is provided on the vibration ring.

[0013] The beneficial effects of the utility model are:

[0014] The utility model discloses a p-toluamide purification system. The output end of a motor is fixedly connected with one end of a second centrifugal component, and the second centrifugal component is driven to work by the rotation of the motor. Meanwhile, the output end of the motor is fixedly connected with one end of a conversion component, and the other end of the conversion component is fixedly connected with a first centrifuge, so that the motor drives the first centrifuge to work when rotating. By adding p-toluamide into the first centrifuge, the p-toluamide is preliminarily purified by the centrifugal action of the first centrifuge, and particles with larger diameters are separated. Meanwhile, the second centrifugal component rotates in the opposite direction to the first centrifuge, so that the p-toluamide filtered for the first time enters the second centrifugal component for secondary purification. Meanwhile, part of the p-toluamide is adhered to the vibration component. The vibration component is arranged so that the p-toluamide adhered to the vibration component is more easily dropped off, so as to collect the purified p-toluamide. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the overall three-dimensional structure of the conversion assembly of the utility model;

[0017] Figure 3 It is a schematic diagram of the overall three-dimensional structure of the second centrifugal assembly of the utility model;

[0018] Figure 4This is a schematic diagram of the overall three-dimensional structure of the vibration component of the utility model;

[0019] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0020] 1. Motor;

[0021] 2. conversion assembly; 21. first rotating shaft; 22. protective shell; 23. bevel gear;

[0022] 3. The first centrifuge;

[0023] 4. Second centrifugal assembly; 41. Second rotating shaft; 42. Centrifugal barrel; 43. Mandrel; 431. Hemispherical block;

[0024] 5. Purification kettle assembly; 51. body; 511. discharge port; 512. feed port; 52. cover;

[0025] 6. Vibration assembly; 61. Vibration ring; 611. Hemispherical groove; 62. Guide shaft; 63. Spring. DETAILED DESCRIPTION

[0026] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0027] The utility model provides the following preferred embodiments:

[0028] Reference Figure 1-2 As shown, a para-toluamide purification system includes a motor 1, a conversion component 2, a first centrifuge 3, a second centrifugal component 4, a purification kettle component 5 and a vibration component 6, wherein the output end of the motor 1 is fixedly connected to one end of the second centrifugal component 4, the output end of the motor 1 is fixedly connected to one end of the conversion component 2, the other end of the conversion component 2 is fixedly connected to the first centrifuge 3, the first centrifuge 3 is rotatably connected to the second centrifugal component 4, the second centrifugal component 4 is arranged in the purification kettle component 5, and the vibration component 6 is arranged in the purification kettle component 5.

[0029] By setting the output end of the motor 1 to be fixedly connected with one end of the second centrifugal component 4, the second centrifugal component 4 is driven to work by the rotation of the motor 1, and the output end of the motor 1 is fixedly connected with one end of the conversion component 2, and the other end of the conversion component 2 is fixedly connected with the first centrifuge 3, so that the motor 1 drives the first centrifuge 3 to work when rotating, and by adding p-toluamide into the first centrifuge 3, the p-toluamide is preliminarily purified by the centrifugal action of the first centrifuge 3, and the particles with larger diameters are separated. At the same time, the second centrifugal component 4 rotates in the opposite direction to the first centrifuge 3, so that the p-toluamide after the first filtration enters the second centrifugal component 4 for secondary purification, and some of it will stick to the vibration component 6. By setting the vibration component 6, the p-toluamide stuck to the vibration component 6 is easier to fall off, so as to collect the purified p-toluamide.

[0030] The conversion assembly 2 includes a first rotating shaft 21, a protective shell 22 and three bevel gears 23, one of the bevel gears 23 is fixedly connected to one end of the second centrifugal assembly 4, one of the bevel gears 23 is fixedly connected to the first centrifuge 3, and another bevel gear 23 is meshed with the two bevel gears 23, the first rotating shaft 21 is fixedly connected to the bevel gear 23, one end of the first rotating shaft 21 is rotatably connected to the protective shell 22, and the three bevel gears 23 are arranged in the protective shell 22.

[0031] A bevel gear 23 is provided to be fixedly connected to one end of the second centrifugal assembly 4, so that the motor 1 drives the bevel gear 23 to rotate when it rotates, and a bevel gear 23 is fixedly connected to the first centrifuge 3, and the other bevel gear 23 is meshed with the two bevel gears 23, so that the second centrifugal assembly 4 and the first centrifuge 3 rotate in opposite directions, so that the centrifugal effect is better, the first rotating shaft 21 is fixedly connected to the bevel gear 23, and one end of the first rotating shaft 21 is rotatably connected to the protective shell 22, and the three bevel gears 23 are arranged in the protective shell 22, so that the device is more firmly connected.

[0032] Reference Figure 3 As shown, the second centrifugal assembly 4 includes a second rotating shaft 41, a centrifugal bucket 42 and a push rod 43, one end of the second rotating shaft 41 is fixedly connected to the motor 1 and a bevel gear 23, the second rotating shaft 41 is rotationally connected to the first centrifuge 3, the push rod 43 is fixedly connected to the other end of the second rotating shaft 41, and the second rotating shaft 41 is fixedly connected to the bottom of the centrifugal bucket 42.

[0033] One end of the second rotating shaft 41 is fixedly connected to the motor 1 and a bevel gear 23, and the second rotating shaft 41 and the bevel gear 23 are driven to rotate by the rotation of the motor 1. The second rotating shaft 41 is rotationally connected to the first centrifuge 3, and the top rod 43 is fixedly connected to the other end of the second rotating shaft 41. The top rod 43 is driven to rotate by the rotation of the second rotating shaft 41. At the same time, the second rotating shaft 41 is fixedly connected to the bottom of the centrifugal bucket 42, so that the second rotating shaft 41 drives the centrifugal bucket 42 to rotate while rotating to achieve secondary centrifugal purification.

[0034] Reference Figure 4 As shown, the vibration assembly 6 includes two vibration rings 61, a guide shaft 62 and a spring 63. The vibration ring 61 is arranged in the purification kettle assembly 5, one end of the guide shaft 62 is fixed in the purification kettle assembly 5, one end of the spring 63 is fixedly connected to the vibration ring 61, and the other end of the spring 63 is fixedly connected to the guide shaft 62.

[0035] By setting a vibration ring 61 in the purification kettle assembly 5, one end of the guide shaft 62 is fixed in the purification kettle assembly 5, one end of the spring 63 is fixedly connected to the vibration ring 61, and the other end of the spring 63 is fixedly connected to the guide shaft 62, the vibration ring 61 vibrates along the direction of the guide shaft 62 through the cooperation of the top rod 43, the spring 63 and the guide shaft 62, so that the p-toluamide remaining on the vibration ring 61 falls off.

[0036] The vibration ring 61 is provided with a plurality of hemispherical grooves 611 , and both ends of the push rod 43 are provided with hemispherical blocks 431 , and the positions of the hemispherical blocks 431 correspond to the hemispherical grooves 611 .

[0037] A plurality of hemispherical grooves 611 are provided on the vibration ring 61, and hemispherical blocks 431 are provided at both ends of the push rod 43. The hemispherical blocks 431 correspond to the hemispherical grooves 611, so that the hemispherical blocks 431 can move in and out of the hemispherical grooves 611, thereby causing the vibration ring 61 to vibrate.

[0038] The purification kettle assembly 5 includes a body 51 and a cover 52 . The cover 52 is fixed on the top of the body 51 . A discharge port 511 is provided at the lower end of the body 51 . A feed port 512 is provided on the cover 52 . Activated carbon is provided on the vibration ring 61 .

[0039] A cover 52 is arranged and fixed on the top of the main body 51 to prevent a small amount of p-toluamide from flying out of the main body 51 under the action of centrifugal force. A discharge port 511 is provided at the lower end of the main body 51, so that the purified p-toluamide flows out from the discharge port 511. A feed port 512 is provided on the cover 52, and activated carbon is provided on the vibration ring 61 to achieve decolorization of p-toluamide.

[0040] The beneficial effects of the present invention are specifically embodied in that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A p-toluamide purification system, characterized in that: The invention comprises a motor (1), a conversion assembly (2), a first centrifuge (3), a second centrifuge assembly (4), a purification kettle assembly (5) and a vibration assembly (6), wherein the output end of the motor (1) is fixedly connected to one end of the second centrifuge assembly (4), the output end of the motor (1) is fixedly connected to one end of the conversion assembly (2), the other end of the conversion assembly (2) is fixedly connected to the first centrifuge (3), the first centrifuge (3) is rotatably connected to the second centrifuge assembly (4), the second centrifuge assembly (4) is arranged in the purification kettle assembly (5), and the vibration assembly (6) is arranged in the purification kettle assembly (5).

2. A p-toluamide purification system according to claim 1, characterized in that: The conversion assembly (2) comprises a first rotating shaft (21), a protective shell (22) and three bevel gears (23); one of the bevel gears (23) is fixedly connected to one end of the second centrifugal assembly (4); one of the bevel gears (23) is fixedly connected to the first centrifuge (3); another bevel gear (23) is meshed with the two bevel gears (23); the first rotating shaft (21) is fixedly connected to the bevel gear (23); one end of the first rotating shaft (21) is rotatably connected to the protective shell (22); and the three bevel gears (23) are arranged in the protective shell (22).

3. A p-toluamide purification system according to claim 2, characterized in that: The second centrifugal assembly (4) comprises a second rotating shaft (41), a centrifugal bucket (42) and a push rod (43); one end of the second rotating shaft (41) is fixedly connected to the motor (1) and a bevel gear (23); the second rotating shaft (41) is rotationally connected to the first centrifuge (3); the push rod (43) is fixedly connected to the other end of the second rotating shaft (41); and the second rotating shaft (41) is fixedly connected to the bottom of the centrifugal bucket (42).

4. A p-toluamide purification system according to claim 3, characterized in that: The vibration assembly (6) comprises two vibration rings (61), a guide shaft (62) and a spring (63); the vibration ring (61) is arranged in the purification kettle assembly (5); one end of the guide shaft (62) is fixed in the purification kettle assembly (5); one end of the spring (63) is fixedly connected to the vibration ring (61); and the other end of the spring (63) is fixedly connected to the guide shaft (62).

5. A p-toluamide purification system according to claim 4, characterized in that: The vibration ring (61) is provided with a plurality of hemispherical grooves (611), and both ends of the push rod (43) are provided with hemispherical blocks (431), and the positions of the hemispherical blocks (431) and the hemispherical grooves (611) correspond to each other.

6. A p-toluamide purification system according to claim 5, characterized in that: The purification kettle assembly (5) comprises a body (51) and a cover (52), wherein the cover (52) is fixed on the top of the body (51), a discharge port (511) is provided at the lower end of the body (51), a feed port (512) is provided on the cover (52), and activated carbon is provided on the vibration ring (61).

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