Automatic dropwise adding equipment for phosphorus trichloride

Abstract

The utility model discloses automatic dropwise adding equipment for phosphorus trichloride, and relates to the technical field of chemical product production. The drip adding device comprises a drip adding storage tank, the upper surface and the interior of the drip adding storage tank are jointly provided with a stirring mechanism, the lower surface of the drip adding storage tank is communicated with an infusion tube, a drip tube body is arranged below the infusion tube, and a flow adjusting assembly is arranged between the infusion tube and the drip tube body. High-precision dynamic adjustment of the dropwise adding speed of phosphorus trichloride is achieved, the dropwise adding precision error is controlled within an extremely small range, the operation stability and reliability of automatic dropwise adding equipment are remarkably improved, the problems of material layering and impurity deposition in the dropwise adding storage tank are solved through the stirring mechanism, the design ensures that the concentration of a dropwise added solution is uniform, and the stability and reliability of the automatic dropwise adding equipment are improved. The pipeline blockage phenomenon is effectively prevented, the equipment maintenance frequency and the unplanned shutdown risk are remarkably reduced, and the production efficiency and safety are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of chemical product manufacturing technology, specifically to an automatic phosphorus trichloride dripping equipment. Background Technology

[0002] Phosphorus trichloride is an important inorganic salt industrial product with wide applications in various fields. In the pesticide industry, it can be used to manufacture organophosphorus pesticides such as trichlorfon, methamidophos, acephate, and isoprothiolane; in the pharmaceutical industry, it can be used to produce sulfadiazine and sulfapyridine; in the fuel industry, it can be used as a condensing agent for cromoglycans; and in chemical production, environmental protection requirements are becoming increasingly stringent. Improper control of phosphorus trichloride addition during production may result in excess waste gas, wastewater, and other pollutants.

[0003] However, existing automatic phosphorus trichloride dosing equipment still has some problems in use:

[0004] First, existing equipment may rely on a single flow sensor, which is susceptible to fluctuations in medium temperature and pressure, causing the dripping rate to fluctuate, affecting the stability of the reaction process, and thus reducing the dripping accuracy of the automatic dripping equipment.

[0005] Secondly, the lack of a stirring structure in the dripping storage tank of the equipment can easily lead to material stratification and impurity deposition, resulting in uneven dripping concentration, pipeline blockage, and affecting process stability. At the same time, it may also cause safety risks such as local overheating and uncontrolled reaction, increasing equipment maintenance costs and the risk of production interruption. Utility Model Content

[0006] In order to solve the problems of poor automatic dripping accuracy and lack of stirring structure in existing dripping equipment, the purpose of this utility model is to provide an automatic phosphorus trichloride dripping device.

[0007] To solve the above technical problems, the present invention adopts the following technical solution: an automatic phosphorus trichloride dripping device, including a dripping storage tank, a stirring mechanism being provided on the upper surface and inside of the dripping storage tank, an infusion pipe being connected to the lower surface of the dripping storage tank, a dripping body being provided below the infusion pipe, a flow regulating component being provided between the infusion pipe and the dripping body, the flow regulating component including a connecting pipe, the connecting pipe being fixedly disposed between the infusion pipe and the dripping body, a support being fixedly installed on one side of the connecting pipe, a stepper motor being fixedly installed on the upper surface of the support, and a round rod being fixedly connected to the output end of the stepper motor, the end of the round rod facing away from the output end of the stepper motor being rotatably connected to the inner wall of the connecting pipe, a rotating plate being fixedly connected to the outer surface of the round rod, and a first baffle and a second baffle being fixedly connected to the inner wall of the connecting pipe respectively for use with the rotating plate.

[0008] Preferably, the stirring mechanism includes a protective cover, which is fixedly installed on the upper surface of the dripping tank. A servo motor is fixedly installed on the inner wall of the protective cover. The output end of the servo motor is fixedly connected to a stirring shaft. The bottom end of the stirring shaft is rotatably connected to the inner cavity of the dripping tank. Connecting rings are fixedly sleeved at equal intervals on the outer surface of the stirring shaft. Stirring components are fixedly connected to the outer surface of the connecting rings in a ring array.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0010] 1. This application effectively overcomes the shortcomings of traditional single flow sensors that are susceptible to temperature and pressure interference by using a flow regulation component, and realizes high-precision dynamic adjustment of phosphorus trichloride dripping speed, controlling the dripping accuracy error within a very small range, and significantly improving the stability and reliability of automatic dripping equipment.

[0011] 2. This application solves the problems of material stratification and impurity deposition in the dripping storage tank by means of a stirring mechanism. This design ensures that the concentration of the dripping solution is uniform and effectively prevents pipeline blockage. It not only ensures the stability of the production process, but also significantly reduces the frequency of equipment maintenance and the risk of unplanned downtime, and greatly improves production efficiency and safety. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the exploded structure of the flow regulating component of this utility model.

[0015] Figure 3 This utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle.

[0016] Figure 4 This is a schematic diagram of the cross-sectional structure of the stirring mechanism of this utility model.

[0017] In the diagram: 1. Dropping tank; 2. Flow regulating component; 21. First baffle; 22. Second baffle; 23. Connecting pipe; 24. First sealing ring; 25. Stepper motor; 26. Support base; 27. Rotating plate; 28. Round rod; 3. Stirring mechanism; 31. Servo motor; 32. Second sealing ring; 33. Stirring component; 34. Through hole; 35. Connecting ring; 36. Stirring shaft; 37. Protective cover; 4. Sealing cap; 5. Liquid addition pipe; 6. Infusion pipe; 7. Dropper. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example: Figure 1-4 As shown, this utility model provides an automatic phosphorus trichloride dripping device, including a dripping storage tank 1. The dripping storage tank 1 stores phosphorus trichloride solution, providing a stable material source for the dripping process. The upper surface of the dripping storage tank 1 is connected to a liquid addition pipe 5, which facilitates the replenishment of materials. The connection design between the liquid addition pipe 5 and the dripping storage tank 1 ensures smooth liquid flow. A sealing cap 4 is movably engaged with the upper surface of the liquid addition pipe 5, which can effectively prevent external impurities from entering the storage tank.

[0020] The upper surface and interior of the dripping tank 1 are equipped with a stirring mechanism 3, which facilitates uniform stirring of the phosphorus trichloride solution. The lower surface of the dripping tank 1 is connected to a delivery pipe 6, and a dropper body 7 is located below the delivery pipe 6. A flow regulating component 2 is located between the delivery pipe 6 and the dropper body 7, which can precisely control the dripping rate of phosphorus trichloride and improve the stability of the reaction process.

[0021] The flow regulation component 2 includes a connecting pipe 23, which is fixedly disposed between the infusion tube 6 and the dropper body 7. A support base 26 is fixedly installed on one side of the connecting pipe 23, and a stepper motor 25 is fixedly installed on the upper surface of the support base 26. The support base 26 provides stable support for the stepper motor 25, ensuring the stability of the motor during operation and reducing the impact of vibration on flow regulation. A round rod 28 is fixedly connected to the output end of the stepper motor 25. The stepper motor 25 drives the round rod 28 to rotate, converting the precise control of the motor into mechanical motion, providing the execution basis for flow regulation. The end of the round rod 28 facing away from the output end of the stepper motor 25 is rotatably connected to the inner wall of the connecting pipe 23 to ensure the smooth rotation of the round rod 28.

[0022] A first sealing ring 24 is fixedly connected to the outer surface of the connecting pipe 23 for use with the round rod 28. The round rod 28 is rotatably connected to the first sealing ring 24. The first sealing ring 24 prevents material leakage along the gap between the round rod 28 and the connecting pipe 23, ensuring the safety and sealing of the equipment. A rotating plate 27 is fixedly connected to the outer surface of the round rod 28. A first baffle 21 and a second baffle 22 for use with the rotating plate 27 are fixedly connected to the inner wall of the connecting pipe 23 respectively. The first baffle 21 and the second baffle 22 are located on both sides of the rotating plate 27 respectively. The first baffle 21 and the second baffle 22 are movably engaged with both sides of the rotating plate 27. The rotating plate 27 rotates with the round rod 28. By changing the size of the gap between it and the first baffle 21 and the second baffle 22, the flow rate is precisely controlled, significantly improving the stability and reliability of the automatic dripping equipment.

[0023] The stirring mechanism 3 includes a protective cover 37, which is fixedly installed on the upper surface of the dripping storage tank 1. A servo motor 31 is fixedly installed on the inner wall of the protective cover 37, protecting the servo motor 31 from the influence of the external environment. The output end of the servo motor 31 is fixedly connected to a stirring shaft 36, which drives the stirring shaft 36 to rotate, thereby achieving vertical stirring of the material in the tank and ensuring uniform mixing. The bottom end of the stirring shaft 36 is rotatably connected to the inner cavity of the dripping storage tank 1 to ensure the stability of the rotation of the stirring shaft 36.

[0024] A second sealing ring 32 is fixedly installed on the upper surface of the dripping storage tank 1 to cooperate with the stirring shaft 36. The stirring shaft 36 is rotatably connected to the second sealing ring 32. The second sealing ring 32 prevents material leakage along the connection between the stirring shaft 36 and the dripping storage tank 1, improving the equipment's sealing performance. Connecting rings 35 are fixedly sleeved at equal intervals on the outer surface of the stirring shaft 36. Stirring elements 33 are fixedly connected in a ring array on the outer surface of the connecting rings 35. The connecting rings 35 fix multiple stirring elements 33 on the stirring shaft 36, forming a multi-layer stirring structure and expanding the stirring range. Through holes 34 are opened at equal intervals on one side of the stirring elements 33. During the stirring process, the through holes 34 cause the liquid to form turbulence, disrupting the laminar flow state, further improving the mixing uniformity, reducing local concentration differences, and effectively preventing pipeline blockage. This not only ensures the stability of the production process but also significantly reduces the frequency of equipment maintenance and the risk of unplanned downtime.

[0025] Working principle: Phosphorus trichloride solution is injected into the drip storage tank 1 through the addition pipe 5. After the addition is completed, the sealing cap 4 is movably attached to the upper surface of the addition pipe 5 to isolate it from the outside air and moisture, prevent phosphorus trichloride from volatilizing or hydrolyzing, and ensure storage safety.

[0026] Next, the stirring mechanism 3 is started, and the servo motor 31 drives the stirring shaft 36 to rotate. The stirring shaft 36 maintains a good seal with the dripping storage tank 1 through the second sealing ring 32.

[0027] The connecting ring 35 on the stirring shaft 36 drives the rotating stirring elements 33 distributed in a ring array. The through hole 34 on one side of the stirring element 33 promotes the formation of turbulence in the liquid, which fully stirs the phosphorus trichloride solution in the storage tank, eliminates material stratification and uneven concentration, avoids impurity deposition, and provides uniform and stable material for precise dripping.

[0028] The homogenized phosphorus trichloride solution flows out from the delivery pipe 6 on the lower surface of the dripping tank 1 and enters the connecting pipe 23.

[0029] The stepper motor 25 in the flow regulation component 2 is started, and its output end drives the round rod 28 to rotate. The round rod 28 is sealed with the connecting pipe 23 through the first sealing ring 24 to prevent material leakage.

[0030] When the round rod 28 rotates, it drives the rotating plate 27 on the outer surface to rotate. The rotating plate 27 rotates between the first baffle 21 and the second baffle 22. By changing the size of the gap between the plate and the baffle, the liquid flow area is adjusted, thereby precisely controlling the dropping speed of phosphorus trichloride.

[0031] Finally, the adjusted phosphorus trichloride solution is dripped into the target container, such as the reaction vessel, through the dropper body 7, completing the precise dripping process.

[0032] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. An automatic phosphorus trichloride dripping device, comprising a dripping storage tank (1), characterized in that: The upper surface and the interior of the dripping tank (1) are provided with a stirring mechanism (3). The lower surface of the dripping tank (1) is connected to a delivery pipe (6). Below the delivery pipe (6) is a dripping body (7). A flow regulating component (2) is provided between the delivery pipe (6) and the dripping body (7).

2. The automatic phosphorus trichloride dripping device as described in claim 1, characterized in that: The flow regulating component (2) includes a connecting pipe (23), which is fixedly disposed between the infusion tube (6) and the dropper body (7). A support base (26) is fixedly installed on one side of the connecting pipe (23). A stepper motor (25) is fixedly installed on the upper surface of the support base (26), and a round rod (28) is fixedly connected to the output end of the stepper motor (25). The end of the round rod (28) facing away from the output end of the stepper motor (25) is rotatably connected to the inner wall of the connecting pipe (23). A rotating plate (27) is fixedly connected to the outer surface of the round rod (28). A first baffle (21) and a second baffle (22) for use with the rotating plate (27) are fixedly connected to the inner wall of the connecting pipe (23).

3. The automatic phosphorus trichloride dripping device as described in claim 1, characterized in that: The stirring mechanism (3) includes a protective cover (37), which is fixedly installed on the upper surface of the dripping tank (1). A servo motor (31) is fixedly installed on the inner wall of the protective cover (37). A stirring shaft (36) is fixedly connected to the output end of the servo motor (31). The bottom end of the stirring shaft (36) is rotatably connected to the inner cavity of the dripping tank (1). A connecting ring (35) is fixedly sleeved at equal intervals on the outer surface of the stirring shaft (36). A stirring element (33) is fixedly connected to the outer surface of the connecting ring (35) in a ring array.

4. The automatic phosphorus trichloride dripping device as described in claim 1, characterized in that: The upper surface of the drip storage tank (1) is connected to a liquid addition pipe (5), and a sealing cap (4) is movably attached to the upper surface of the liquid addition pipe (5).

5. The automatic phosphorus trichloride dripping device as described in claim 2, characterized in that: The outer surface of the connecting pipe (23) is fixedly connected to a first sealing ring (24) that is used in conjunction with the round rod (28), and the round rod (28) is rotatably connected to the first sealing ring (24).

6. The automatic phosphorus trichloride dripping device as described in claim 2, characterized in that: The first baffle (21) and the second baffle (22) are located on both sides of the rotating plate (27), and the first baffle (21) and the second baffle (22) are movably engaged with both sides of the rotating plate (27).

7. The automatic phosphorus trichloride dripping device as described in claim 3, characterized in that: The upper surface of the drip storage tank (1) is fixedly equipped with a second sealing ring (32) for use with the stirring shaft (36), and the stirring shaft (36) is rotatably connected to the second sealing ring (32).

8. The automatic phosphorus trichloride dripping device as described in claim 3, characterized in that: The stirring component (33) has through holes (34) at equal intervals on one side.

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