Water washing tank for clixidine production

Abstract

The utility model relates to the field of clixidine processing equipment, and discloses a water washing tank for clixidine production, which comprises a tank body and a deposition tank, the deposition tank is arranged at the bottom end of the tank body, one side in the tank body is rotatably connected with a first stirring shaft, and the other side in the tank body is rotatably connected with a second stirring shaft. One end of the first stirring shaft penetrates through the side wall of the tank body and is fixedly connected with a motor, a plurality of flow guide pipes are arranged on the outer side of the washing disc in the circumferential direction, a water inlet pipe penetrates through the top wall of the tank body, the bottom end of the water inlet pipe is communicated with a coil pipe, and a backflow pipe penetrates through the side wall of the tank body. According to the device, the first gear is driven by the first stirring shaft through the second gear, so that the second stirring shaft and the first stirring shaft rotate reversely at the same time, the pump body pumps a water mixed solution of the clixidine to the water washing disc through the discharging pipe and the backflow pipe, and efficient cleaning can be achieved.

Description

Technical Field

[0001] The utility model relates to the field of cresidine production equipment, in particular to a water washing tank for cresidine production. Background Technique

[0002] Cresidine is a raw material for synthesizing acid dyes and is used to manufacture disperse red and other disperse dyes. When producing cresidine, it is obtained by nitration, methoxylation, and reduction of p-chlorotoluene. At 15 - 20 °C, mixed acid is added to p-chlorotoluene, stirred at 30 °C for 2 h, diluted with water, waste acid is separated, and washed with water to obtain 4-chloro-3-nitrotoluene (yield 30.6%) and 4-chloro-2-nitrotoluene (yield 56.7%). The two are separated by fractional distillation and crystallization to obtain 4-chloro-3-nitrotoluene. It is reacted with methanol and sodium methoxide solution, neutralized and separated with sulfuric acid to obtain 3-nitro-4-methoxytoluene with a yield of 85.6%. After reduction with water, iron powder, and formic acid, it is obtained by multiple extractions and distillations with solvent gasoline. 2. 2-nitro-4-cresol is obtained by nitration of p-cresol, then methylated with dimethyl sulfate to 3-nitro-4-p-methoxytoluene, and finally reduced with sodium sulfide. 3. It is prepared by nitration, methoxylation, and reduction reactions of p-chloro-N,N-diethylbenzylamine method;

[0003] After preparing cresidine, equipment is needed to wash and purify it to further remove impurities therein, improve its purity, and facilitate meeting the market use requirements. Water washing is also a very important step in the cresidine purification process. When the existing cresidine water washing tank actually washes cresidine, the water washing effect is not good, resulting in a large amount of impurities in cresidine. Content of the Utility Model

[0004] The purpose of the utility model is to solve the deficiencies existing in the prior art and propose a water washing tank for cresidine production.

[0005] To achieve the above object, the utility model adopts the following technical solutions: A water washing tank for the production of cresidine, comprising a tank body and a sedimentation tank. The sedimentation tank is arranged at the bottom end of the tank body. One side inside the tank body is rotatably connected with a first stirring shaft, and the other side inside the tank body is rotatably connected with a second stirring shaft. One end of the first stirring shaft penetrates through the side wall of the tank body and is fixedly connected with a motor. The other end of the first stirring shaft penetrates through the tank body and is fixedly connected with a second gear. One end of the second stirring shaft penetrates through the tank body and is fixedly connected with a first gear. The second gear and the first gear are meshed and connected. A water washing disc is arranged at the upper part inside the tank body. A plurality of diversion pipes are circumferentially arranged on the outer side of the water washing disc. A water inlet pipe penetrates through the top wall of the tank body. The bottom end of the water inlet pipe is communicated with a coil pipe. A return pipe penetrates through the side wall of the tank body. The end of the return pipe extending into the tank body is arranged between the coil pipe and the water washing disc. The end of the return pipe far away from the tank body is connected to the input end of a pump body. The output end of the pump body is communicated with the bottom of the side wall of the tank body through a discharge pipe.

[0006] As a further description of the above technical solution:

[0007] Four legs are fixedly connected to the bottom end of the sedimentation tank.

[0008] As a further description of the above technical solution:

[0009] A discharge pipe is arranged at the bottom end of the sedimentation tank. The stirring rods on the first stirring shaft and the second stirring shaft are alternately staggered. A feed pipe penetrates through the side wall of the tank body on the side of the motor. A waste liquid pipe is arranged on the other side of the tank body.

[0010] As a further description of the above technical solution:

[0011] The motor is fixedly connected to the outer wall of one side of the tank body.

[0012] As a further description of the above technical solution:

[0013] The inner sides of the water washing disc and the diversion pipes are communicated to form a divergent-shaped groove.

[0014] As a further description of the above technical solution:

[0015] The coil pipe is arranged directly above the water washing disc. The end of the water inlet pipe far away from the tank body is connected to a water supply pipeline.

[0016] As a further description of the above technical solution:

[0017] One side of the discharge pipe is communicated with the sedimentation tank through a blanking pipe. Solenoid valves are arranged on the discharge pipe between the blanking pipe and the pump body, and at the connection of the blanking pipe close to the discharge pipe.

[0018] The utility model has the following beneficial effects:

[0019] In the utility model, the first stirring shaft is driven by a motor, and the first stirring shaft drives the first gear through the second gear, so as to realize the reverse and simultaneous rotation of the second stirring shaft and the first stirring shaft. At the same time, the solenoid valve of the blanking pipe is closed, and the pump body extracts the aqueous mixture of cresidine through the discharge pipe to the water washing tray through the reflux pipe. Then, the water inlet coil pipe mixes the aqueous cresidine mixture fully. Such a setting can achieve that when washing cresidine, it is completely mixed with water, realize its efficient cleaning, and ensure that the impurities in cresidine can be completely washed out and then discharged, so as to obtain purer cresidine. Description of the Drawings

[0020] Figure 1 is a three-dimensional view of a water washing tank for cresidine production proposed by the utility model;

[0021] Figure 2 is a sectional structure view of a water washing tank for cresidine production proposed by the utility model;

[0022] Figure 3 is a partial sectional structure view of a water washing tank for cresidine production proposed by the utility model;

[0023] Figure 4 is a three-dimensional view of the water washing tray of a water washing tank for cresidine production proposed by the utility model.

[0024] Legend Explanation:

[0025] 1. Tank body; 2. Water inlet pipe; 3. Reflux pipe; 4. First gear; 5. Second gear; 6. Pump body; 7. Discharge pipe; 8. Blanking pipe; 9. Deposition tank; 10. Motor; 11. First stirring shaft; 12. Second stirring shaft; 13. Discharge pipe; 14. Water washing tray; 15. Diversion pipe; 16. Coil pipe. Specific Embodiments

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the utility model without creative efforts shall fall within the protection scope of the utility model.

[0027] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model; the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and defined, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0028] Referring to Figures 1-4 , an embodiment provided by the present utility model: a water washing tank for the production of cresidine, including a tank body 1 and a sedimentation tank 9. The sedimentation tank 9 is arranged at the bottom end of the tank body 1. One side inside the tank body 1 is rotatably connected with a first stirring shaft 11, and the other side inside the tank body 1 is rotatably connected with a second stirring shaft 12. One end of the first stirring shaft 11 penetrates through the side wall of the tank body 1 and is fixedly connected with a motor 10. The other end of the first stirring shaft 11 penetrates through the tank body 1 and is fixedly connected with a second gear 5. One end of the second stirring shaft 12 penetrates through the tank body 1 and is fixedly connected with a first gear 4. The second gear 5 and the first gear 4 are meshed and connected. A water washing disc 14 is arranged at the upper part inside the tank body 1. A plurality of diversion pipes 15 are circumferentially arranged outside the water washing disc 14. A water inlet pipe 2 penetrates through the top wall of the tank body 1. The bottom end of the water inlet pipe 2 is communicated with a coil pipe 16. A return pipe 3 penetrates through the side wall of the tank body 1. One end of the return pipe 3 extending into the tank body 1 is arranged between the coil pipe 16 and the water washing disc 14. The end of the return pipe 3 far away from the tank body 1 is connected to the input end of a pump body 6. The output end of the pump body 6 is communicated with the bottom of the side wall of the tank body 1 through a discharge pipe 7. By driving the first stirring shaft 11 by the motor 10, and the first stirring shaft 11 driving the first gear 4 through the second gear 5, the second stirring shaft 12 and the first stirring shaft 11 rotate in the opposite direction and at the same time. When feeding, the water inlet pipe 2 inputs clear water into the tank body 1 through the coil pipe 16. When cleaning, the solenoid valve of the blanking pipe 8 is closed, and the pump body 6 extracts the water mixture of cresidine through the discharge pipe 7 and the return pipe 3 to the upper part of the water washing disc 14. The clear water entering from the coil pipe 16 just rinses the water mixture of cresidine specifically. After that, the fully mixed cresidine flows into the tank body 1 through the water washing disc 14 and the diversion pipes 15, and is continuously circulated and stirred by the first stirring shaft 11 and the second stirring shaft 12, so that the cleaning quality of cresidine is good, the cleaning effect is good, and the cleaning quality of cresidine is improved.

[0029] Four legs are fixedly connected to the bottom end of the sedimentation tank 9. The legs are used to support the equipment. A discharge pipe 13 is provided at the bottom end of the sedimentation tank 9. The stirring rods on the first stirring shaft 11 and the second stirring shaft 12 are alternately staggered. A feed pipe penetrates through the side wall of the tank body 1 on one side of the motor 10. The feed pipe is used to introduce the crude cresidine mixture into the tank body 1. A waste liquid pipe is provided on the other side of the tank body 1. The waste liquid pipe is used to discharge the wastewater for washing cresidine. The motor 10 is fixedly connected to the outer wall of one side of the tank body 1. The click 10 is a servo motor. The inner sides of the water washing plate 14 and the diversion pipe 15 are connected to form a divergent-shaped groove. The cresidine and water mixture flows down from the water washing plate 14 and is fully mixed. A plurality of nozzles are provided on the coil pipe 16 for washing cresidine. The coil pipe 16 is arranged directly above the water washing plate 14. One end of the water inlet pipe 2 away from the tank body 1 is connected to a water supply pipeline. One side of the discharge pipe 7 is connected to the sedimentation tank 9 through a blanking pipe 8. An electromagnetic valve is provided on the discharge pipe 7 between the blanking pipe 8 and the pump body 6. An electromagnetic valve is provided at the connection of the blanking pipe 8 close to the discharge pipe 7. The electromagnetic valve is used for opening and closing the system.

[0030] Working principle: During actual use, the cresidine mixture is input through the feed pipe. After that, the first stirring shaft 11 is driven by the motor 10. The first stirring shaft 11 drives the first gear 4 through the second gear 5, realizing the reverse and simultaneous rotation of the second stirring shaft 12 and the first stirring shaft 11. While feeding, the water inlet pipe 2 inputs clean water into the tank body 1 through the coil pipe 16. During cleaning, the electromagnetic valve of the blanking pipe 8 is closed. The pump body 6 extracts the cresidine water mixture through the discharge pipe 7 and the return pipe 3 to the water washing plate 14. The clean water entering the coil pipe 16 just specifically flushes the cresidine mixture. After that, the fully and thoroughly mixed cresidine flows into the tank body 1 through the water washing plate 14 and the diversion pipe 15 and is continuously circulated and stirred by the first stirring shaft 11 and the second stirring shaft 12. Such a setting can fully achieve the water washing effect of cresidine. With such a setting, when washing cresidine, it can be completely mixed with water to achieve its efficient cleaning. After water washing, the preliminarily settled cresidine wastewater is discharged from the waste liquid pipe. Then, the electromagnetic valve on the discharge pipe 7 is closed, and the electromagnetic valve on the blanking pipe 8 is opened to allow the cresidine mixture to settle in the sedimentation tank 9. Finally, the finished cresidine is discharged from the discharge pipe 13, realizing that the impurities in the cresidine can be completely washed out and then discharged, obtaining purer cresidine.

[0031] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A water washing tank for producing crissidine, comprising a tank body (1) and a sedimentation tank (9), characterized in that: The sedimentation tank (9) is arranged at the bottom end of the tank body (1); a first stirring shaft (11) is rotatably connected to one side of the tank body (1); a second stirring shaft (12) is rotatably connected to the other side of the tank body (1); one end of the first stirring shaft (11) passes through the side wall of the tank body (1) and is fixedly connected to a motor (10); the other end of the first stirring shaft (11) passes through the tank body (1) and is fixedly connected to a second gear (5); one end of the second stirring shaft (12) passes through the tank body (1) and is fixedly connected to a first gear (4); the second gear (5) and the first gear (4) are meshingly connected; the tank body (1) A water washing pan (14) is arranged at the upper part of the tank body (1), and a plurality of flow guide pipes (15) are arranged in the circumferential direction of the outer side of the water washing pan (14). A water inlet pipe (2) is penetrated through the top wall of the tank body (1), and the bottom end of the water inlet pipe (2) is connected to a coil (16). A return pipe (3) is penetrated through the side wall of the tank body (1), and one end of the return pipe (3) extending into the tank body (1) is arranged between the coil (16) and the water washing pan (14). The end of the return pipe (3) away from the tank body (1) is connected to the input end of the pump body (6), and the output end of the pump body (6) is connected to the bottom of the side wall of the tank body (1) through a discharge pipe (7).

2. A water washing tank for producing crissidine according to claim 1, characterized in that: Four supporting legs are fixedly connected to the bottom end of the sedimentation tank (9).

3. A water washing tank for producing crissidine according to claim 1, characterized in that: A discharge pipe (13) is provided at the bottom end of the sedimentation tank (9), the stirring rods on the first stirring shaft (11) and the second stirring shaft (12) are alternately arranged, a feed pipe is passed through the side wall of the tank body (1) on one side of the motor (10), and a waste liquid pipe is provided on the other side of the tank body (1).

4. A water washing tank for producing crissidine according to claim 1, characterized in that: The motor (10) is fixedly connected to an outer wall of one side of the tank body (1).

5. A water washing tank for producing crissidine according to claim 1, characterized in that: The inner sides of the water washing plate (14) and the flow guide pipe (15) are connected to form a divergent groove.

6. A water washing tank for producing crissidine according to claim 1, characterized in that: The coil (16) is arranged directly above the water washing pan (14), and the end of the water inlet pipe (2) away from the tank body (1) is connected to a water supply pipe.

7. A water washing tank for producing crissidine according to claim 1, characterized in that: One side of the discharge pipe (7) is connected to a sedimentation tank (9) via a lower pipe (8), a solenoid valve is provided on the discharge pipe (7) between the lower pipe (8) and the pump body (6), and a solenoid valve is provided at a connection of the lower pipe (8) close to the discharge pipe (7).

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