Alkali metering tank for producing sulfachloropyrazine sodium

Abstract

The utility model relates to the technical field of metering tanks, and provides an alkali metering tank for sulfachloropyrazine sodium production, which comprises five groups of side plates, a metering column is arranged between two adjacent groups of side plates, the outer end of the metering column is fixedly connected with a connecting shaft, the connecting shaft is rotatably connected with the side plates, and the connecting shaft is fixedly connected with the side plates. A drying assembly is arranged in the metering column and comprises a storage cavity formed in the metering column. The stirring blades connected through the fulcrum shaft rotate in the storage cavity in the metering column, so that alkaline substances stored in the storage cavity are stirred, solid alkaline substances are prevented from being affected with damp and adhering to the inner wall of the metering pipe, and liquid alkaline substances can be prevented from being separated out and crystallized in a low-temperature environment; and in the process of stirring the alkaline substances, hot air flow passing through the interior of the air cavity achieves the effects of drying and heat preservation on the alkaline substances stored in the storage cavity.

Description

Technical Field

[0001] This utility model relates to the field of metering tank technology, specifically to an alkali metering tank for the production of sodium sulfachloropyrazine. Background Technology

[0002] Sulfachloropyrazine sodium is a widely used antibacterial drug, primarily used to treat infectious diseases caused by viruses, bacteria, and fungi. In the synthesis of sulfachloropyrazine sodium, a dibenzimidazole compound is first coupled with an amide or imine. Adding an appropriate amount of alkaline substance at this stage can reduce the carbonyl group in the amide or imine to an alcohol, promoting the coupling reaction. In the subsequent diazotization step, nitrite is usually used as a catalyst. However, the presence of nitrite may interfere with the diazotization process, leading to a decrease in product purity and yield. Adding an appropriate amount of alkaline substance can deactivate the nitrite, thus ensuring the normal progress of the diazotization reaction. During the synthesis of sulfachloropyrazine sodium, decarboxylation protection is sometimes required to prevent potential side reactions. In this case, alkaline substances such as sodium hydroxide can be used to decarboxylate the target molecule, ensuring that the target molecule does not undergo unexpected changes in subsequent reactions. During the production process, some acidic impurities may be introduced, affecting the purity and quality of the product. By adding an appropriate amount of alkaline substances, these acidic impurities can be neutralized, reducing their impact on the product.

[0003] The production of sodium sulfachloropyrazine involves the addition of various alkaline substances, primarily including sodium hydroxide, sodium carbonate, potassium hydroxide, and ammonia. Some of these alkaline additives are highly hygroscopic; prolonged storage in the metering tube leads to moisture absorption, affecting not only the effectiveness of the alkaline substances but also causing some solid alkaline substances to adhere to the inner wall of the metering tube. To address this issue, a new alkaline metering tank for sodium sulfachloropyrazine production is proposed. This tank utilizes a stirring blade at the outer end of a support shaft to agitate the alkaline substances in the metering tube while simultaneously introducing a hot gas flow into the internal gas chamber of the metering tube. Utility Model Content

[0004] This invention proposes an alkali metering tank for the production of sodium sulfachlorpyrifos, which solves the problems in related technologies where alkaline substances absorb water and become damp, affecting their performance and causing damp alkaline substances to adhere to the inner wall of the metering tube.

[0005] The technical solution of this utility model is as follows:

[0006] A metering tank for the production of sodium sulfachlorpyrifos includes side plates, five sets of which are provided. A metering column is provided between two adjacent sets of side plates. A connecting shaft is fixedly connected to the outer end of the metering column, and the connecting shaft is rotatably connected to the side plate. A drying assembly is provided inside the metering column. The drying assembly includes a storage cavity opened inside the metering column. A support shaft is rotatably connected inside the storage cavity. A stirring blade is fixedly connected to the outer end of the support shaft. An air cavity is provided at the outer end of the storage cavity. The air cavity is located inside the metering column. Two connecting pipes are fixedly connected to the back of the metering column and communicate with the air cavity.

[0007] Optionally, the metering column is provided in four sets, the outer end of the metering column is provided with a viewing groove, the side plate is arc-shaped, the outer end of the side plate is provided with an arc-shaped sliding groove, and the outer end of the metering column is fixedly connected with a stop rod, which is slidably connected to the inside of the arc-shaped sliding groove.

[0008] Optionally, the drying assembly further includes a cavity connecting plate fixedly connected to the top of the four sets of metering columns. The cavity connecting plate is rotatably connected to a pulley, and there are four pulleys. A connecting belt is sleeved between two adjacent pulleys. A first servo motor is fixedly connected to the top of the cavity connecting plate. The output end of the first servo motor is fixedly connected to one of the pulleys. The support shaft is fixedly connected to the pulleys.

[0009] Optionally, the drying assembly further includes an air inlet pipe and an air outlet pipe respectively fixedly connected to the outer ends of the two connecting pipes, with the air inlet pipe located below the air outlet pipe.

[0010] Optionally, a metering solenoid valve is fixedly connected to the bottom end of the metering column, and a discharge pipe is fixedly connected to the bottom end of the metering solenoid valve. The air inlet pipe, the air outlet pipe, and the discharge pipe are all flexible hoses, and a diverter pipe is fixedly connected to the outer end of the discharge pipe.

[0011] Optionally, a feeding pipe is fixedly connected to the upper back side of the metering column, and the feeding pipe is connected to the storage cavity inside the metering column.

[0012] Optionally, a fixing frame is symmetrically fixed to the outer side of the side plates at both ends. The fixing frame is L-shaped and has an arc-shaped clamp at one end.

[0013] Optionally, a second servo motor is fixedly connected to the outer end of one of the side plates, and the output end of the second servo motor is fixedly connected to the coupling shaft.

[0014] The working principle and beneficial effects of this utility model are as follows:

[0015] 1. In this utility model, the stirring blade connected by the support shaft rotates in the storage cavity inside the metering column, thereby stirring the alkaline substance stored inside. This prevents the solid alkaline substance from getting damp and sticking to the inner wall of the metering tube, and also prevents the liquid alkaline substance from crystallizing at low temperatures, thus affecting the use effect of the alkaline substance. During the stirring process of the alkaline substance, the hot airflow passing through the gas cavity has a drying and heat preservation effect on the alkaline substance stored in the storage cavity. Attached Figure Description

[0016] The preferred embodiments will be described below in a clear and easy-to-understand manner, in conjunction with the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages and implementation methods of this utility model.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a rear view of the present invention;

[0019] Figure 3 This is a schematic diagram of the internal structure of the metering column of this utility model;

[0020] Figure 4 This is a schematic diagram of the connection structure between the pulley and the transmission belt of this utility model;

[0021] Figure 5 This is a front view of the present utility model.

[0022] In the diagram: 1. Side plate; 2. Connecting shaft; 3. Metering column; 4. Drying assembly; 401. Storage chamber; 402. Support shaft; 403. Stirring blade; 404. Air chamber; 405. Connecting pipe; 406. Cavity connecting plate; 407. Pulley; 408. Connecting belt; 409. First servo motor; 4010. Air inlet pipe; 4011. Air outlet pipe; 5. Metering solenoid valve; 6. Discharge pipe; 7. Diverter pipe; 8. Feeding pipe; 9. Fixing frame; 10. Push rod; 11. Second servo motor. Detailed Implementation

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0024] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0025] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] Example 1

[0028] Reference Figures 1-5 This is the first embodiment of the present invention, which proposes an alkali metering tank for the production of sodium sulfachlorpyrifos, including a side plate 1, which has five sets. A metering column 3 is provided between two adjacent sets of side plates 1. A connecting shaft 2 is fixedly connected to the outer end of the metering column 3. The connecting shaft 2 is rotatably connected to the side plate 1. A drying assembly 4 is provided inside the metering column 3. The drying assembly 4 includes a storage cavity 401 opened inside the metering column 3. A support shaft 402 is rotatably connected inside the storage cavity 401. A stirring blade 403 is fixedly connected to the outer end of the support shaft 402. An air cavity 404 is provided at the outer end of the storage cavity 401. The air cavity 404 is located inside the metering column 3. A connecting pipe 405 is fixedly connected to the back of the metering column 3. There are two connecting pipes 405, which are connected to the air cavity 404. The purpose of this arrangement is that when alkaline substances are stored in the storage chamber 401 of the metering column 3, the support shaft 402 drives the stirring blade 403 to rotate inside the storage chamber 401, thereby stirring the stored alkaline substances and preventing the moist alkaline substances from sticking to the inner wall of the storage chamber 401. At the same time, hot air enters the air chamber 404 inside the metering column 3 from the connecting pipe 405, which has the effect of keeping the storage chamber 401 warm and dry.

[0029] Optionally, the metering column 3 is provided in four sets. The outer end of the metering column 3 is provided with a viewing groove. The side plate 1 is arc-shaped, and the outer end of the side plate 1 is provided with an arc-shaped sliding groove. The outer end of the metering column 3 is fixedly connected to a stop rod 10, which is slidably connected inside the arc-shaped sliding groove. The purpose of this arrangement is that the stop rod 10 can drive the metering column 3 to rotate between multiple sets of side plates 1, thereby causing the metering column 3 to tilt. The tilted metering column 3 causes the alkaline substance inside the storage cavity 401 to be laid at an angle, enhancing the drying effect of the alkaline substance.

[0030] Optionally, the drying assembly 4 also includes a cavity connecting plate 406 fixedly connected to the top of the four sets of metering columns 3. Four pulleys 407 are rotatably connected inside the cavity connecting plate 406, and a connecting belt 408 is sleeved between adjacent pulleys 407. A first servo motor 409 is fixedly connected to the top of the cavity connecting plate 406, and the output end of the first servo motor 409 is fixedly connected to one of the pulleys 407. A support shaft 402 is fixedly connected to the pulleys 407. The purpose of this arrangement is that, during the stirring and drying process of the alkaline substance inside the storage cavity 401, the first servo motor 409 drives one of the pulleys 407 to rotate, and the rotating pulley 407 drives the connecting belt 408 to rotate, thereby causing multiple sets of pulleys 407 to drive multiple sets of support shafts 402 to rotate simultaneously, thus causing the stirring blades 403 at their outer ends to stir and dry the alkaline substance inside the storage cavity 401.

[0031] Optionally, the drying assembly 4 also includes an inlet pipe 4010 and an outlet pipe 4011, which are respectively fixedly connected to the outer ends of the two connecting pipes 405, with the inlet pipe 4010 located below the outlet pipe 4011. The purpose of this arrangement is that the inlet pipe 4010 can be connected to the reactor, allowing the hot gas flow inside the reactor to enter the gas chamber 404 through the inlet pipe 4010, and the flowing hot gas flow is discharged from the outlet pipe 4011 after heat transfer.

[0032] Example 2

[0033] Reference Figures 1-5 This is the second embodiment of the present invention, which differs from the first embodiment in that:

[0034] Compared to Embodiment 1, the bottom end of the metering column 3 is further fixedly connected to a metering solenoid valve 5, and the bottom end of the metering solenoid valve 5 is fixedly connected to a discharge pipe 6. The air inlet pipe 4010, the air outlet pipe 4011, and the discharge pipe 6 are all flexible hoses, and the outer end of the discharge pipe 6 is fixedly connected to a diverter pipe 7. The purpose of this arrangement is that the flexible hoses facilitate the deformation and bending of the metering column 3 during rotation, avoiding bending and damage to the air inlet pipe 4010, the air outlet pipe 4011, and the discharge pipe 6.

[0035] Optionally, a feed tube 8 is fixedly connected to the upper back of the metering column 3, and the feed tube 8 is connected to the storage cavity 401 inside the metering column 3. The purpose of this arrangement is to facilitate the replenishment of alkaline substances into the metering column 3 by the feed tube 8.

[0036] Optionally, fixing frames 9 are symmetrically fixed to the outer sides of the side plates 1 at both ends. The fixing frames 9 are L-shaped, and one end of the fixing frame 9 is provided with an arc-shaped clamp. The purpose of this arrangement is to facilitate the fixing of the side plates 1 and the internal metering column 3 to the outer end of the reactor by the fixing frames 9.

[0037] Optionally, a second servo motor 11 is fixedly connected to the outer end of one of the side plates 1, and the output end of the second servo motor 11 is fixedly connected to the connecting shaft 2. The purpose of this arrangement is that the second servo motor 11 is used to drive the connecting shaft 2 to rotate, thereby causing the metering column 3 to rotate between multiple sets of side plates 1.

[0038] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An alkali metering tank for the production of sodium sulfachloropyrazine, characterized in that, The device includes a side plate (1), which has five sets. A metering column (3) is provided between two adjacent sets of the side plates (1). A connecting shaft (2) is fixedly connected to the outer end of the metering column (3). The connecting shaft (2) is rotatably connected to the side plate (1). A drying component (4) is provided inside the metering column (3). The drying component (4) includes a storage cavity (401) opened inside the metering column (3). A support shaft (402) is rotatably connected inside the storage cavity (401). A stirring blade (403) is fixedly connected to the outer end of the support shaft (402). An air cavity (404) is provided at the outer end of the storage cavity (401). The air cavity (404) is located inside the metering column (3). A connecting pipe (405) is fixedly connected to the back of the metering column (3). There are two connecting pipes (405) and they are connected to the air cavity (404).

2. The alkali metering tank for the production of sodium sulfachloropyrazine according to claim 1, characterized in that, The metering column (3) is provided in four sets. The outer end of the metering column (3) is provided with a visible groove. The side plate (1) is arc-shaped. The outer end of the side plate (1) is provided with an arc-shaped sliding groove. The outer end of the metering column (3) is fixedly connected with a stop rod (10). The stop rod (10) is slidably connected to the inside of the arc-shaped sliding groove.

3. The alkali metering tank for the production of sodium sulfachloropyrazine according to claim 1, characterized in that, The drying assembly (4) further includes a cavity connecting plate (406) fixedly connected to the top of the four sets of metering columns (3). The cavity connecting plate (406) is rotatably connected to a pulley (407). There are four pulleys (407). A connecting belt (408) is sleeved between two adjacent pulleys (407). A first servo motor (409) is fixedly connected to the top of the cavity connecting plate (406). The output end of the first servo motor (409) is fixedly connected to one of the pulleys (407). The support shaft (402) is fixedly connected to the pulley (407).

4. The alkali metering tank for the production of sodium sulfachloropyrazine according to claim 1, characterized in that, The drying assembly (4) also includes an air inlet pipe (4010) and an air outlet pipe (4011) that are respectively fixedly connected to the outer ends of the two connecting pipes (405), with the air inlet pipe (4010) located on the lower side of the air outlet pipe (4011).

5. The alkali metering tank for the production of sodium sulfachloropyrazine according to claim 4, characterized in that, The bottom end of the metering column (3) is fixedly connected to a metering solenoid valve (5), and the bottom end of the metering solenoid valve (5) is fixedly connected to a discharge pipe (6). The air inlet pipe (4010), the air outlet pipe (4011), and the discharge pipe (6) are all flexible hoses. The outer end of the discharge pipe (6) is fixedly connected to a diverter pipe (7).

6. The alkali metering tank for the production of sodium sulfachloropyrazine according to claim 1, characterized in that, A feeding tube (8) is fixedly connected to the upper back side of the metering column (3), and the feeding tube (8) is connected to the storage cavity (401) inside the metering column (3).

7. The alkali metering tank for the production of sodium sulfachloropyrazine according to claim 1, characterized in that, A fixing frame (9) is symmetrically fixed to the outer side of the side plate (1) located at both ends. The fixing frame (9) is L-shaped and has an arc-shaped clamp at one end.

8. The alkali metering tank for the production of sodium sulfachloropyrazine according to claim 1, characterized in that, One of the side plates (1) is fixedly connected to the outer end of a second servo motor (11), and the output end of the second servo motor (11) is fixedly connected to the connecting shaft (2).

Images