A cooling device for preparing reactive halogen-free nitrogen-phosphorus flame retardant

Abstract

The utility model provides a kind of preparation reaction type halogen-free nitrogen phosphorus flame retardant cooling device, including cooling shell, the inner bottom of cooling shell is fixedly connected with mounting seat, the upper surface of mounting seat is fixedly connected with reaction kettle, the outer surface of reaction kettle is fixedly connected with radiating coil pipe, the upper end of radiating coil pipe is fixedly connected with first water inlet pipe, the lower end of radiating coil pipe is fixedly connected with first water outlet pipe, the outer surface of cooling shell is fixedly connected with mounting shell, the inner wall of mounting shell is fixedly connected with mounting bracket.The utility model provides preparation reaction type halogen-free nitrogen phosphorus flame retardant cooling device, and structure is reasonable, by "coil pipe water cooling+spray head atomization evaporation+fan air cooling" threefold synergy: high temperature stage, coil pipe quickly takes away basic heat, spray head atomization water utilizes latent heat of phase change to accelerate cooling;Low temperature stage, fan accelerates hot air to discharge, avoid local temperature rebound, precision match cooling demand, effectively prevent material caking or decomposition.

Description

Technical Field

[0001] This utility model belongs to the technical field of cooling devices, and more specifically, it relates to a cooling device for preparing reactive halogen-free nitrogen-phosphorus flame retardants. Background Technology

[0002] In the preparation of reactive halogen-free nitrogen and phosphorus flame retardants, after the polymerization reaction, the system needs to be cooled from a high temperature gradient to a specific temperature for subsequent neutralization reaction. The cooling effect directly affects the purity and performance of the product. Therefore, a special cooling device is required to efficiently and accurately control the temperature of the reaction vessel, avoid the decomposition and agglomeration of materials due to temperature fluctuations, and ensure the stability of the nitrogen and phosphorus structure of the flame retardant and the continuity of the preparation process.

[0003] Most traditional devices rely solely on water or air cooling, resulting in slow cooling rates at high temperatures and material clumping at low temperatures due to inaccurate temperature control. This fails to meet the dual requirements of "rapid cooling + precise temperature control" for reactive halogen-free nitrogen-phosphorus flame retardants. Summary of the Invention

[0004] The purpose of this invention is to provide a cooling device for preparing reactive halogen-free nitrogen-phosphorus flame retardants. It achieves this through a triple synergy of "coil water cooling + nozzle atomization evaporation + fan blade air cooling": in the high-temperature stage, the coil quickly removes the basic heat, and the nozzle atomizes water to accelerate cooling using the latent heat of phase change; in the low-temperature stage, the fan blades accelerate the discharge of hot air, avoid local temperature rebound, accurately match the cooling requirements, and effectively prevent material agglomeration or decomposition.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A cooling device for preparing a reactive halogen-free nitrogen-phosphorus flame retardant is provided, comprising a cooling shell, a mounting base fixedly connected to the inner bottom of the cooling shell, a reaction vessel fixedly connected to the upper surface of the mounting base, a heat dissipation coil fixedly connected to the outer surface of the reaction vessel, a first water inlet pipe fixedly connected to the upper end of the heat dissipation coil, a first water outlet pipe fixedly connected to the lower end of the heat dissipation coil, a mounting shell fixedly connected to the outer surface of the cooling shell, a mounting bracket fixedly connected to the inner wall of the mounting shell, a rotating shaft rotatably mounted on the inner surface of the mounting bracket, multiple fan blades fixedly connected to the outer surface of the rotating shaft, and a first pulley fixedly connected to the end of the rotating shaft away from the fan blades. A connecting base is fixedly connected, and a motor is fixedly connected to the upper surface of the connecting base. A second pulley is fixedly connected to the output end of the motor. The first pulley and the second pulley are connected by belt drive. An impeller is fixedly connected to the end of the second pulley away from the motor. A pump housing is fixedly connected to the upper surface of the connecting base. The impeller is located inside the pump housing. A second water inlet pipe is fixedly connected to the outer surface of the pump housing. A second water outlet pipe is fixedly connected to the outer surface of the pump housing. A connecting pipe is fixedly connected to the end of the second water outlet pipe away from the pump housing. A ring pipe is fixedly connected to the inner surface of the cooling shell. The end of the connecting pipe away from the second water outlet pipe is fixedly connected to the outer surface of the ring pipe. Multiple nozzles are fixedly connected to the outer surface of the ring pipe.

[0006] Optionally, the side wall of the mounting housing is provided with an air inlet slot, and the number of air inlet slots is multiple.

[0007] Optionally, a feed inlet is fixedly connected to the upper surface of the reactor, and a first solenoid valve is fixedly connected to the outer surface of the feed inlet.

[0008] Optionally, a first exhaust port is fixedly connected to the upper surface of the reactor, and a second solenoid valve is fixedly connected to the outer surface of the first exhaust port.

[0009] Optionally, a discharge port is fixedly connected to the lower surface of the reactor, and a fourth solenoid valve is fixedly connected to the outer surface of the discharge port.

[0010] Optionally, a second exhaust port is fixedly connected to the outer surface of the cooling shell, and a third solenoid valve is fixedly connected to the outer surface of the second exhaust port.

[0011] This utility model has the following beneficial effects: Compared with existing technologies, this cooling device for preparing reactive halogen-free nitrogen-phosphorus flame retardants comprises a first water inlet pipe, a heat dissipation coil, a reaction vessel, a discharge port, a motor, a second pulley, an impeller, a pump housing, a second water outlet pipe, a connecting pipe, a ring pipe, a nozzle, a second exhaust port, a belt, a first pulley, a rotating shaft, fan blades, and a cooling shell. The first water inlet pipe introduces external water, which is then cooled by the heat dissipation coil. The water, after absorbing heat, is discharged through the discharge port, thereby cooling the reaction vessel. Simultaneously, the motor drives the second pulley and impeller to rotate, introducing cold water through the pump housing into the second water outlet pipe, and then through the connecting pipe into the ring pipe. Finally, the water is sprayed onto the outer surface of the reaction vessel through the nozzle. The atomized water sprayed from the nozzle absorbs heat and evaporates into gaseous water, which is then discharged through the second exhaust port. The second pulley can also be driven by a belt. The synchronous drive of the first pulley rotates, which in turn drives the shaft and fan blades to rotate, further accelerating the discharge of hot air and gaseous water inside the cooling shell, thus enhancing the heat dissipation effect. Compared with existing cooling devices that mostly rely on single water cooling or air cooling, which have slow cooling rates at high temperatures and are prone to material agglomeration due to inaccurate temperature control at low temperatures, failing to meet the dual requirements of "rapid cooling + precise temperature control" for reactive halogen-free nitrogen-phosphorus flame retardants, this cooling device for preparing reactive halogen-free nitrogen-phosphorus flame retardants uses a triple synergy of "coil water cooling + nozzle atomization evaporation + fan blade air cooling": at high temperatures, the coil quickly removes the basic heat, and the nozzle atomizes water to accelerate cooling using the latent heat of phase change; at low temperatures, the fan blades accelerate the discharge of hot air, avoiding local temperature rebound, precisely matching the cooling requirements, and effectively preventing material agglomeration or decomposition. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model, 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 A schematic diagram of the overall structure of the cooling device for preparing reactive halogen-free nitrogen-phosphorus flame retardants provided in this embodiment of the utility model; Figure 2 A cross-sectional view of the overall structure of the cooling device for preparing reactive halogen-free nitrogen-phosphorus flame retardants provided in an embodiment of this utility model; Figure 3 Another cross-sectional view of the overall structure of the cooling device for preparing reactive halogen-free nitrogen-phosphorus flame retardants provided in this embodiment of the utility model; Figure 4 The cooling device for preparing reactive halogen-free nitrogen-phosphorus flame retardants provided in this embodiment of the invention Figure 3 Enlarged view of the structure at point A in the middle.

[0014] The following are the labeling elements in the figure: 1. Cooling shell; 2. Mounting base; 3. Reactor; 4. Heat dissipation coil; 5. First water inlet pipe; 6. First water outlet pipe; 7. Mounting shell; 8. Mounting bracket; 9. Rotating shaft; 10. Fan blade; 11. First pulley; 12. Connecting base; 13. Motor; 14. Second pulley; 15. Impeller; 16. Pump housing; 17. Second water inlet pipe; 18. Second water outlet pipe; 19. Connecting pipe; 20. Ring pipe; 21. Nozzle; 22. Air inlet slot; 23. Feed inlet; 24. First solenoid valve; 25. First exhaust port; 26. Second solenoid valve; 27. Second exhaust port; 28. Third solenoid valve; 29. ​​Discharge port; 30. Fourth solenoid valve; 31. Belt. Detailed Implementation

[0015] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0016] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0017] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0019] Reference Figure 1-4The present invention provides a cooling device for preparing reactive halogen-free nitrogen-phosphorus flame retardants. The device includes a cooling shell 1, a mounting base 2 fixedly connected to the bottom inner part of the cooling shell 1, and a reaction vessel 3 fixedly connected to the upper surface of the mounting base 2. The reaction vessel 3 should be equipped with a temperature detection mechanism, which is well known to those skilled in the art and will not be described herein. The reaction vessel 3 is made of 316L stainless steel, which has good thermal conductivity and corrosion resistance. A heat dissipation coil 4 is fixedly connected to the outer surface of the reaction vessel 3. A first water inlet pipe 5 is fixedly connected to the upper end of the heat dissipation coil 4, which is connected to an external water supply pipe. A first water outlet pipe 6 is fixedly connected to the lower end of the heat dissipation coil 4. A mounting shell 7 is fixedly connected to the outer surface of the cooling shell 1, and the inner wall of the mounting shell 7 is fixedly connected to... There is a mounting bracket 8, on the inner surface of which a rotating shaft 9 is rotatably mounted. Multiple fan blades 10 are fixedly connected to the outer surface of the rotating shaft 9. A first pulley 11 is fixedly connected to the end of the rotating shaft 9 away from the fan blades 10. A connecting seat 12 is fixedly connected to the outer surface of the cooling shell 1. A motor 13 is fixedly connected to the upper surface of the connecting seat 12. A second pulley 14 is fixedly connected to the output end of the motor 13. The first pulley 11 and the second pulley 14 are connected by a belt 31. An impeller 15 is fixedly connected to the end of the second pulley 14 away from the motor 13. A pump housing 16 is fixedly connected to the upper surface of the connecting seat 12. The impeller 15 is located inside the pump housing 16. A second water inlet pipe 1 is fixedly connected to the outer surface of the pump housing 16. 7. The second inlet pipe 17 is connected to an external pipeline for water supply. The second outlet pipe 18 is fixedly connected to the outer surface of the pump housing 16. The end of the second outlet pipe 18 away from the pump housing 16 is fixedly connected to a connecting pipe 19. The inner surface of the cooling shell 1 is fixedly connected to a ring pipe 20. The end of the connecting pipe 19 away from the second outlet pipe 18 is fixedly connected to the outer surface of the ring pipe 20. Multiple nozzles 21 are fixedly connected to the outer surface of the ring pipe 20. The first inlet pipe 5 introduces external water to cool the reactor 3 through the heat dissipation coil 4. The water that has absorbed heat is then discharged through the outlet 29, thereby cooling the reactor 3. At the same time, the motor 13 drives the second pulley 14 and impeller 15 to rotate, introducing cold water into the second outlet pipe through the pump housing 16. The water is fed into the pipe 18 and then into the ring pipe 20 through the connecting pipe 19. Finally, it is sprayed onto the outer surface of the reactor 3 through the nozzle 21. The atomized water sprayed from the nozzle 21 absorbs heat and evaporates into gaseous water, which is then discharged through the second exhaust port 27. At the same time, the second pulley 14 can drive the first pulley 11 to rotate through the belt 31, which in turn drives the rotating shaft 9 and the fan blade 10 to rotate. This further accelerates the discharge of hot air and gaseous water inside the cooling shell 1, thereby enhancing the heat dissipation effect. The side wall of the mounting shell 7 is provided with an air inlet slot 22. There are multiple air inlet slots 22. When the fan blade 10 rotates, the air inlet slots 22 can introduce outside air into the cooling shell 1, which facilitates the discharge of high-temperature gas inside the cooling shell 1.

[0020] Please refer to another embodiment of this utility model as well. Figures 1 to 4 A feed inlet 23 is fixedly connected to the upper surface of the reactor 3. A first solenoid valve 24 is fixedly connected to the outer surface of the feed inlet 23. The first solenoid valve 24 can control the opening and closing of the feed inlet 23. The feed inlet 23 is used to add raw materials and materials required for the reaction into the reactor 3. A first exhaust port 25 is fixedly connected to the upper surface of the reactor 3. A second solenoid valve 26 is fixedly connected to the outer surface of the first exhaust port 25. The second solenoid valve 26 can control the opening and closing of the first exhaust port 25. The first exhaust port 25 is used to discharge the contents of the reactor 3 during the reaction process. The generated waste gas is discharged through a discharge port 29 fixedly connected to the lower surface of the reactor 3. A fourth solenoid valve 30 is fixedly connected to the outer surface of the discharge port 29. The fourth solenoid valve 30 is used to control the opening and closing of the discharge port 29. The discharge port 29 is used to discharge the material after the reaction is completed. A second exhaust port 27 is fixedly connected to the outer surface of the cooling shell 1. A third solenoid valve 28 is fixedly connected to the outer surface of the second exhaust port 27. The third solenoid valve 28 is used to control the opening and closing of the second exhaust port 27. The second exhaust port 27 is used to discharge the high-temperature gas inside the cooling shell 1.

[0021] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cooling device for preparing reactive halogen-free nitrogen-phosphorus flame retardants, comprising a cooling shell (1), characterized in that: The cooling shell (1) has a mounting base (2) fixedly connected to its inner bottom. A reaction vessel (3) is fixedly connected to the upper surface of the mounting base (2). A heat dissipation coil (4) is fixedly connected to the outer surface of the reaction vessel (3). A first water inlet pipe (5) is fixedly connected to the upper end of the heat dissipation coil (4). A first water outlet pipe (6) is fixedly connected to the lower end of the heat dissipation coil (4). A mounting shell (7) is fixedly connected to the outer surface of the cooling shell (1). A mounting bracket (8) is fixedly connected to the inner wall of the mounting shell (7). A rotating shaft (9) is rotatably mounted on the inner surface of the mounting bracket (8). Multiple fan blades (10) are fixedly connected to the outer surface of the rotating shaft (9). A first pulley (11) is fixedly connected to the end of the rotating shaft (9) away from the fan blades (10). A connecting seat (12) is fixedly connected to the outer surface of the cooling shell (1). A motor (13) is fixedly connected to the upper surface of the connecting seat (12). The output end is fixedly connected to a second pulley (14). The first pulley (11) and the second pulley (14) are connected by a belt (31). The end of the second pulley (14) away from the motor (13) is fixedly connected to an impeller (15). The upper surface of the connecting seat (12) is fixedly connected to a pump housing (16). The impeller (15) is located inside the pump housing (16). The outer surface of the pump housing (16) is fixedly connected to a second inlet pipe (17). The outer surface of the pump housing (16) is fixedly connected to a second outlet pipe (18). The end of the second outlet pipe (18) away from the pump housing (16) is fixedly connected to a connecting pipe (19). The inner surface of the cooling shell (1) is fixedly connected to a ring pipe (20). The end of the connecting pipe (19) away from the second outlet pipe (18) is fixedly connected to the outer surface of the ring pipe (20). The outer surface of the ring pipe (20) is fixedly connected to multiple nozzles (21).

2. The device for preparing a reactive halogen-free nitrogen-phosphorus flame retardant as described in claim 1, characterized in that: The mounting housing (7) has an air inlet slot (22) on its side wall, and there are multiple air inlet slots (22).

3. The device for preparing a reactive halogen-free nitrogen-phosphorus flame retardant as described in claim 1, characterized in that: The upper surface of the reactor (3) is fixedly connected to a feed inlet (23), and the outer surface of the feed inlet (23) is fixedly connected to a first solenoid valve (24).

4. The device for preparing a reactive halogen-free nitrogen-phosphorus flame retardant as described in claim 1, characterized in that: The upper surface of the reactor (3) is fixedly connected to a first exhaust port (25), and the outer surface of the first exhaust port (25) is fixedly connected to a second solenoid valve (26).

5. The device for preparing a reactive halogen-free nitrogen-phosphorus flame retardant as described in claim 1, characterized in that: The lower surface of the reactor (3) is fixedly connected to a discharge port (29), and the outer surface of the discharge port (29) is fixedly connected to a fourth solenoid valve (30).

6. The cooling device for preparing reactive halogen-free nitrogen-phosphorus flame retardants as described in claim 1, characterized in that: The outer surface of the cooling shell (1) is fixedly connected to a second exhaust port (27), and the outer surface of the second exhaust port (27) is fixedly connected to a third solenoid valve (28).

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