A phosphorus trichloride production feeder

Abstract

This utility model discloses a phosphorus trichloride production feeding device, relating to the field of phosphorus trichloride production technology. The utility model includes a yellow phosphorus raw material storage tank, a cover plate, and a chlorine raw material storage tank. A hollow cylinder is fixedly connected to the top of the cover plate, and a flow meter is fixedly connected to the bottom of the hollow cylinder. The end of the flow meter away from the hollow cylinder is fixedly connected to the cover plate. A stirring and heating assembly is provided on the outer surface of the hollow cylinder and the outer surface of the cover plate. The stirring and heating assembly includes a third conveying pipe. The middle part of the hollow cylinder is rotatably connected to the outer surface of the third conveying pipe. A heat transfer oil storage tank is fixedly connected to the top of the cover plate, and an oil suction pump is fixedly connected to the top of the heat transfer oil storage tank. This utility model solves the problems of the viscosity of liquid yellow phosphorus changing with temperature, making accurate flow meter measurement difficult, and the high labor intensity and susceptibility to human error in manually controlling chlorine delivery by turning valves.

Description

Technical Field

[0001] This utility model relates to the field of phosphorus trichloride production technology, specifically to a phosphorus trichloride production feeding device. Background Technology

[0002] Phosphorus trichloride is an important chemical raw material that can be used to produce organophosphorus pesticides, flame retardants, plasticizers, etc. In the production of phosphorus trichloride, yellow phosphorus and chlorine are usually used as raw materials. Yellow phosphorus is chemically active and easily ignites, and is usually stored in liquid form in storage tanks made of specific materials. Chlorine is stored in high-pressure steel cylinders or large chlorine storage tanks. Some large production enterprises require a large amount of stable phosphorus trichloride as raw material, so a phosphorus trichloride production feeding device is needed to meet their production needs.

[0003] Phosphorus trichloride production feeders typically use flow meters. However, when conveying liquid yellow phosphorus, its viscosity changes significantly with temperature, making it difficult for flow meters to accurately measure the flow rate, which affects the stoichiometric ratio of the reaction. In addition, most phosphorus trichloride production feeders control the amount of chlorine gas delivered by manually turning multiple valves to adjust the opening of the pipeline, which requires manual operation and monitoring, is labor-intensive, and is prone to human error. Utility Model Content

[0004] To address the problems of the viscosity of liquid yellow phosphorus changing with temperature, making it difficult for flow meters to measure accurately and the high labor intensity and human error associated with manually controlling chlorine gas delivery by turning valves, this utility model aims to provide a phosphorus trichloride production feeding device.

[0005] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: a phosphorus trichloride production feeding device, comprising a yellow phosphorus raw material storage tank, a cover plate, and a chlorine raw material storage tank. A hollow cylinder is fixedly connected to the top of the cover plate, and a flow meter is fixedly connected to the bottom of the hollow cylinder. The end of the flow meter away from the hollow cylinder is fixedly connected to the cover plate. A stirring and heating assembly is provided on the outer surface of the hollow cylinder and the outer surface of the cover plate. The stirring and heating assembly includes a third conveying pipe. The middle part of the hollow cylinder is rotatably connected to the outer surface of the third conveying pipe. A heat transfer oil storage tank is fixedly connected to the top of the cover plate, and an oil suction pump is fixedly connected to the top of the heat transfer oil storage tank. A fourth conveying pipe is fixedly connected to the outer surface of the oil suction pump. The end of the fourth conveying pipe away from the oil suction pump is rotatably connected to the outer end of the third conveying pipe. A second gear is fixedly connected to the outer surface of the third conveying pipe. An L-shaped plate is fixedly connected to the top of the hollow cylinder. A first gear is rotatably connected to the outer surface of the L-shaped plate. A submersible pump is fixedly connected to the outer surface of the yellow phosphorus raw material storage tank. A first conveying pipe is fixedly connected to the outer surface of the submersible pump. The end of the first conveying pipe away from the submersible pump is fixedly connected to the top of the hollow cylinder. A second motor is fixedly connected to the outer surface of the L-shaped plate. One end of the output shaft of the second motor is fixedly connected to the middle of the first gear. The outer surfaces of the first gear and the second gear mesh. A heater is fixedly connected to the outer surface of the heat transfer oil storage tank.

[0006] Preferably, a second conveying pipe is fixedly connected to the outer surface of the cover plate, a sliding plate is fixedly connected to the outer surface of the second conveying pipe, a screw is rotatably connected to the outer surface of the sliding plate, a sliding plate is slidably connected inside the sliding plate, a plurality of through slots of different sizes are opened on the outer surface of the sliding plate, the outer surface of the sliding plate is threadedly connected to the outer surface of the screw, a first motor is fixedly connected to the outer surface of the sliding plate, one end of the output shaft of the first motor is fixedly connected to the outer end of the screw, a compressor is fixedly connected to the outer surface of the chlorine raw material storage tank, and the end of the second conveying pipe away from the cover plate is fixedly connected to the outer surface of the compressor.

[0007] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0008] 1. By setting up a stirring and heating component, the liquid yellow phosphorus can be heated and stirred evenly during the transportation process, which effectively reduces the influence of its viscosity changes with temperature, thereby improving the measurement accuracy of the flow meter and ensuring the precision of the stoichiometric ratio of the reaction.

[0009] 2. By setting up the linkage between the slide plate, screw, sliding plate and through groove, the rotation of the screw will drive the sliding plate to slide inside the slide plate, thereby changing the opening of the through groove on the sliding plate. This enables automated control of the chlorine delivery volume, reduces manual operation, lowers labor intensity, and avoids the possibility of human error. Attached Figure Description

[0010] 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.

[0011] Figure 1 This is a schematic diagram of the overall structure proposed in this utility model;

[0012] Figure 2 This is a schematic diagram of the cross-sectional structure of the hollow cylinder proposed in this utility model;

[0013] Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0014] Figure 4 This is a schematic diagram of the cross-sectional structure of the slide plate proposed in this utility model.

[0015] In the diagram: 1. Yellow phosphorus raw material storage tank; 2. Submersible pump; 3. Chlorine raw material storage tank; 4. Cover plate; 5. Compressor; 6. First conveying pipe; 7. Second conveying pipe; 8. Hollow cylinder; 9. Fourth conveying pipe; 10. Heater; 11. Heat transfer oil storage tank; 12. Flow meter; 13. Sliding plate; 14. Slide plate; 15. Oil suction pump; 16. Third conveying pipe; 17. Second motor; 18. L-shaped plate; 19. First gear; 20. Second gear; 21. Through groove; 22. First motor; 23. Screw. Detailed Implementation

[0016] 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.

[0017] Example: Figure 1-4As shown, this utility model provides a phosphorus trichloride production feeding device, including a yellow phosphorus raw material storage tank 1, a cover plate 4, and a chlorine raw material storage tank 3. A hollow cylinder 8 is fixedly connected to the top of the cover plate 4, and a flow meter 12 is fixedly connected to the bottom of the hollow cylinder 8. The end of the flow meter 12 away from the hollow cylinder 8 is fixedly connected to the cover plate 4. A stirring and heating assembly is provided on the outer surface of the hollow cylinder 8 and the outer surface of the cover plate 4. The stirring and heating assembly includes a third conveying pipe 16 and a hollow cylinder. The middle part of the hollow cylinder 8 is rotatably connected to the outer surface of the third conveying pipe 16. A heat transfer oil storage tank 11 is fixedly connected to the top of the cover plate 4. An oil suction pump 15 is fixedly connected to the top of the heat transfer oil storage tank 11. A fourth conveying pipe 9 is fixedly connected to the outer surface of the oil suction pump 15. The end of the fourth conveying pipe 9 away from the oil suction pump 15 is rotatably connected to the outer end of the third conveying pipe 16. A second gear 20 is fixedly connected to the outer surface of the third conveying pipe 16. An L-shaped plate 18 is fixedly connected to the top of the hollow cylinder 8. A first gear is rotatably connected to the outer surface of the L-shaped plate 18. 19. The heat transfer oil in the heat transfer oil storage tank 11 is transported to the third delivery pipe 16 through the oil suction pump 15 and the fourth delivery pipe 9. The third delivery pipe 16 rotates inside the hollow cylinder 8, transferring heat to the yellow phosphorus inside the hollow cylinder 8. A submersible pump 2 is fixedly connected to the outer surface of the yellow phosphorus raw material storage tank 1. A first delivery pipe 6 is fixedly connected to the outer surface of the submersible pump 2. The end of the first delivery pipe 6 away from the submersible pump 2 is fixedly connected to the top of the hollow cylinder 8, so that the yellow phosphorus can be drawn out by the submersible pump 2 and transported by the first delivery pipe 6. The oil is fed into the hollow cylinder 8. A second motor 17 is fixedly connected to the outer surface of the L-shaped plate 18. One end of the output shaft of the second motor 17 is fixedly connected to the middle of the first gear 19, so that the rotation of the output shaft of the second motor 17 can drive the first gear 19 to rotate. The outer surface of the first gear 19 meshes with the outer surface of the second gear 20, so that the rotation of the first gear 19 can drive the rotation of the second gear 20. A heater 10 is fixedly connected to the outer surface of the heat transfer oil storage tank 11, so that the heat transfer oil in the heat transfer oil storage tank 11 can be heated.

[0018] A second conveying pipe 7 is fixedly connected to the outer surface of the cover plate 4. A sliding plate 14 is fixedly connected to the outer surface of the second conveying pipe 7. A screw 23 is rotatably connected to the outer surface of the sliding plate 14. A sliding plate 13 is slidably connected inside the sliding plate 14. Multiple through slots 21 of different sizes are opened on the outer surface of the sliding plate 13. The outer surface of the sliding plate 13 is threadedly connected to the outer surface of the screw 23, so that when the screw 23 rotates, it can drive the sliding plate 13 to slide inside the sliding plate 14, changing the opening of the through slots 21 on the sliding plate 13. A first motor 22 is fixedly connected to the outer surface of the sliding plate 14. One end of the output shaft of the first motor 22 is fixedly connected to the outer end of the screw 23, so that the rotation of the output shaft of the first motor 22 can drive the screw 23 to rotate. A compressor 5 is fixedly connected to the outer surface of the chlorine raw material storage tank 3. The end of the second conveying pipe 7 away from the cover plate 4 is fixedly connected to the outer surface of the compressor 5, so that chlorine can be compressed by the compressor 5 and transported to the reaction vessel by the second conveying pipe 7.

[0019] Working principle: In practical applications, when liquid yellow phosphorus is drawn from the yellow phosphorus raw material storage tank 1 by the submersible pump 2, it is transported to the hollow cylinder 8 through the first conveying pipe 6. At this time, the heat transfer oil in the heat transfer oil storage tank 11 is transported to the third conveying pipe 16 through the oil suction pump 15 and the fourth conveying pipe 9. The third conveying pipe 16 rotates in the hollow cylinder 8, transferring heat to the yellow phosphorus in the hollow cylinder 8 to achieve heating. At the same time, the second motor 17 drives the first gear 19 to rotate. The first gear 19 meshes with the second gear 20, driving the third conveying pipe 16 to rotate in the hollow cylinder 8 to achieve the stirring function. With the combined effect of heating and stirring, the viscosity of the yellow phosphorus is reduced. When it flows into the reactor through the flow meter 12, its flow rate can be measured more accurately, thereby ensuring the accuracy of the stoichiometric ratio of the reaction.

[0020] When chlorine gas is extracted from the chlorine raw material storage tank 3 by the compressor 5 and transported to the reactor through the second conveying pipe 7, the first motor 22 starts and drives the screw 23 to rotate on the outer surface of the slide plate 14. Since the outer surface of the slide plate 13 is threadedly connected to the outer surface of the screw 23, the slide plate 13 will slide inside the slide plate 14. Multiple through slots 21 of different sizes are opened on the outer surface of the slide plate 13, which can adjust the amount of chlorine gas conveyed according to production needs. When the slide plate 13 slides to the appropriate position, the chlorine gas enters the second conveying pipe 7 through the through slot 21 and continues to be conveyed to the subsequent production process. This can realize the automated control of the amount of chlorine gas conveyed, reduce manual operation, reduce labor intensity, and avoid the possibility of human error.

[0021] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0022] 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. A phosphorus trichloride production feeding device, comprising a yellow phosphorus raw material storage tank (1), a cover plate (4), and a chlorine raw material storage tank (3), characterized in that: A hollow cylinder (8) is fixedly connected to the top of the cover plate (4), and a flow meter (12) is fixedly connected to the bottom of the hollow cylinder (8). The end of the flow meter (12) away from the hollow cylinder (8) is fixedly connected to the cover plate (4). A stirring and heating assembly is provided on the outer surface of the hollow cylinder (8) and the outer surface of the cover plate (4). The stirring and heating assembly includes a third conveying pipe (16), the middle part of the hollow cylinder (8) is rotatably connected to the outer surface of the third conveying pipe (16), the top of the cover plate (4) is fixedly connected to a heat transfer oil storage tank (11), the top of the heat transfer oil storage tank (11) is fixedly connected to an oil suction pump (15), the outer surface of the oil suction pump (15) is fixedly connected to a fourth conveying pipe (9), the end of the fourth conveying pipe (9) away from the oil suction pump (15) is rotatably connected to the outer end of the third conveying pipe (16), the outer surface of the third conveying pipe (16) is fixedly connected to a second gear (20), the top of the hollow cylinder (8) is fixedly connected to an L-shaped plate (18), and the outer surface of the L-shaped plate (18) is rotatably connected to a first gear (19).

2. The phosphorus trichloride production feeding device as described in claim 1, characterized in that, The outer surface of the cover plate (4) is fixedly connected to a second conveying pipe (7), the outer surface of the second conveying pipe (7) is fixedly connected to a sliding plate (14), the outer surface of the sliding plate (14) is rotatably connected to a screw (23), the inner surface of the sliding plate (14) is slidably connected to a sliding plate (13), the outer surface of the sliding plate (13) is provided with multiple through slots (21) of different sizes, and the outer surface of the sliding plate (13) is threadedly connected to the outer surface of the screw (23).

3. The phosphorus trichloride production feeding device as described in claim 2, characterized in that, The outer surface of the slide plate (14) is fixedly connected to a first motor (22), and one end of the output shaft of the first motor (22) is fixedly connected to the outer end of the screw (23).

4. The phosphorus trichloride production feeding device as described in claim 2, characterized in that, The compressor (5) is fixedly connected to the outer surface of the chlorine raw material storage tank (3), and the end of the second delivery pipe (7) away from the cover plate (4) is fixedly connected to the outer surface of the compressor (5).

5. The phosphorus trichloride production feeding device as described in claim 1, characterized in that, The outer surface of the yellow phosphorus raw material storage tank (1) is fixedly connected to a submersible pump (2), and the outer surface of the submersible pump (2) is fixedly connected to a first delivery pipe (6). The end of the first delivery pipe (6) away from the submersible pump (2) is fixedly connected to the top of the hollow cylinder (8).

6. The phosphorus trichloride production feeding device as described in claim 1, characterized in that, The outer surface of the L-shaped plate (18) is fixedly connected to a second motor (17), and one end of the output shaft of the second motor (17) is fixedly connected to the middle of the first gear (19).

7. The phosphorus trichloride production feeding device as described in claim 1, characterized in that, The outer surface of the first gear (19) meshes with the outer surface of the second gear (20).

8. The phosphorus trichloride production feeding device as described in claim 1, characterized in that, A heater (10) is fixedly connected to the outer surface of the heat transfer oil storage tank (11).

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