A quantitative feeding silicone-based polycarbonate flame retardant mixing device

Abstract

The utility model provides a kind of organic silicon-based polycarbonate flame retardant mixing equipment of ration feeding, it is related to organic silicon-based polycarbonate flame retardant production equipment technical field, including workbench, the top of workbench is provided with first raw material storage tank, the top of workbench is provided with second raw material storage tank, the upper surface of workbench is installed with stirring bucket, the top of workbench is installed with metering pump, the output end of metering pump is communicated with the upper surface of stirring bucket.The utility model is closed loop control design by setting and using high-precision metering pump and electronic valve, automatically adjusts feeding flow by controller preset parameter, realizes the accurate control of raw material ratio, rotates by motor driving stirring shaft, the outer surface of stirring shaft uses double-layer propeller blade, forms the double convection of axial and radial in stirring bucket, effectively eliminates the common stirring dead angle in traditional equipment, and this structure design makes material mixing uniformity obtain qualitative promotion.

Description

Technical Field

[0001] This utility model relates to the technical field of production equipment for organosilicon-based polycarbonate flame retardants, specifically a mixing device for quantitatively feeding organosilicon-based polycarbonate flame retardants. Background Technology

[0002] Polycarbonate materials are widely used in a wide range of industries, including aerospace, machinery, automotive, textiles, light industry, and construction, due to their excellent mechanical properties, dimensional stability, ease of coloring, and aging resistance. However, in fields with high flame retardancy requirements, such as electronics and electrical engineering, and architectural decoration, the flame retardant properties of polycarbonate are somewhat insufficient. Organosilicon-based flame retardants, as a type of halogen-free flame retardant, are increasingly widely used due to the high bond energy of the Si-O bonds in their molecular chains, excellent thermal stability, and ability to promote the formation of a stable carbon layer during combustion, effectively preventing smoke formation and flame development. They are also more environmentally friendly.

[0003] In the production process of silicone-based polycarbonate flame retardants, the mixing of raw materials is a critical step. On the one hand, it is difficult to accurately quantify the feed, resulting in deviations in the proportion of each raw material and affecting the stability of the flame retardant's performance. On the other hand, poor mixing results in dead zones in the mixing process, leading to uneven material mixing and reduced product quality. Therefore, a quantitative feeding mixing device for silicone-based polycarbonate flame retardants is needed to solve the problems existing in the current technology. Utility Model Content

[0004] The purpose of this invention is to provide a mixing device for quantitatively dispensing organosilicon-based polycarbonate flame retardants, so as to solve the problems of inaccurate quantitative dispensing and poor mixing effect mentioned above.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a quantitative feeding mixing device for organosilicon-based polycarbonate flame retardants, including a workbench, a first raw material storage tank and a second raw material storage tank arranged above the workbench, a mixing tank mounted on the upper surface of the workbench, a metering pump mounted above the workbench, the output end of the metering pump connected to the upper surface of the mixing tank, the input end of the metering pump connected to a main pipe, the end of the main pipe away from the metering pump connected to a tee pipe, the outer surface of the tee pipe connected to a first conveying pipe and a second conveying pipe respectively, the end of the first conveying pipe away from the tee pipe connected to the outer surface of the first raw material storage tank, the end of the second conveying pipe away from the tee pipe connected to the outer surface of the second raw material storage tank, a first electronic valve mounted on the outer surface of both the first and second conveying pipes, a motor mounted on the upper surface of the mixing tank, the output end of the motor passing through the mixing tank and mounted with a stirring shaft, and multiple heaters mounted inside the mixing tank.

[0006] As a further embodiment of this utility model: a plurality of first support legs are installed on the upper surface of the workbench, and a support plate is installed on the upper surface of the plurality of first support legs. The upper surface of the support plate is connected to the bottom surface of the first raw material storage tank and the bottom surface of the second raw material storage tank.

[0007] As a further improvement of this utility model: a fixing plate is installed on the right side of the workbench, and a subsequent processing box is installed on the upper surface of the fixing plate.

[0008] As a further improvement of this utility model: a centrifugal pump is installed above the fixed plate, and the output end of the centrifugal pump is connected to the outer surface of the subsequent processing box.

[0009] As a further embodiment of this utility model: the input end of the centrifugal pump is connected to a discharge pipe, a second electronic valve is installed on the outer surface of the discharge pipe, and the end of the discharge pipe away from the centrifugal pump is connected to the outer surface of the mixing tank.

[0010] As a further embodiment of this utility model: a centrifugal fan is installed above the workbench, the input end of the centrifugal fan is connected to the upper surface of the mixing tank, a controller is installed on the upper surface of the workbench, and multiple second support legs are welded to the bottom surface of the workbench.

[0011] As a further embodiment of this utility model: a purification box is installed on the upper surface of the workbench, and the output end of the centrifugal fan is connected to an exhaust gas conveying pipe, with the end of the exhaust gas conveying pipe away from the centrifugal fan connected to the upper surface of the purification box.

[0012] As a further embodiment of this utility model: a filter plate is installed inside the purification box, an activated carbon honeycomb plate is installed inside the purification box, an exhaust pipe is connected to the outer surface of the purification box, and a door is hinged to the front of the purification box.

[0013] Compared with the prior art, the beneficial effects of this utility model include: This invention employs a closed-loop control design using a high-precision metering pump and electronic valves. The controller automatically adjusts the feed flow rate based on preset parameters, achieving precise control of the raw material ratio. Compared to the crude feeding method of traditional equipment, this design fundamentally avoids the randomness of manual operation, significantly reducing the deviation in the feeding ratio of different raw materials, greatly improving the consistency of products between batches, and significantly increasing the production qualification rate. The motor drives the stirring shaft to rotate, and the outer surface of the stirring shaft uses double-layered propeller blades to form axial and radial convection within the mixing tank. This effectively eliminates the stirring dead zones commonly found in traditional equipment, especially the right-angled area at the bottom of the cylindrical mixing chamber. This structural design qualitatively improves the uniformity of material mixing and significantly improves the dispersion of the organosilicon phase in the polycarbonate matrix, enhancing the compatibility of the composite material at the microscopic level. Attached Figure Description

[0014] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein: Figure 1 The schematic diagram shows a three-dimensional structural diagram of a mixing device for quantitative feeding of organosilicon-based polycarbonate flame retardant according to one embodiment of the present invention. Figure 2 The schematic diagram shows a left view of a mixing device for quantitative feeding of organosilicon-based polycarbonate flame retardant according to one embodiment of the present invention; Figure 3 The schematic diagram shows a cross-sectional view of a quantitative feeding mixing device for organosilicon-based polycarbonate flame retardants according to one embodiment of the present invention. Figure 4 The schematic diagram shows a top view of a quantitative feeding mixing device for organosilicon-based polycarbonate flame retardants according to one embodiment of the present invention; Figure 5 This illustration schematically shows a mixing device for quantitatively feeding organosilicon-based polycarbonate flame retardants according to one embodiment of the present invention. Figure 2 Enlarged schematic diagram of the structure at point A in the middle.

[0015] In the picture: 1. Workbench; 2. First raw material storage tank; 3. First conveying pipe; 4. Second conveying pipe; 5. First electronic valve; 6. Subsequent processing box; 7. Second support leg; 8. Exhaust gas conveying pipe; 9. Box door; 10. Main pipe; 11. Metering pump; 12. Motor; 13. Centrifugal fan; 14. Exhaust pipe; 15. Filter plate; 16. Activated carbon honeycomb panel; 17. Purification box; 18. Heater; 19. Stirring shaft; 20. Second electronic valve; 21. Discharge pipe; 22. Centrifugal pump; 23. First support leg; 24. Support plate; 25. T-pipe; 26. Second raw material storage tank; 27. Fixing plate; 28. Stirring tank; 29. ​​Controller. Detailed Implementation

[0016] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0017] An embodiment of the present invention is shown in conjunction with the accompanying drawings.

[0018] A quantitative feeding mixing device for organosilicon-based polycarbonate flame retardants includes a workbench 1, a platform for placing and operating the equipment; a first raw material storage tank 2, a container for storing a first type of raw material to be mixed, is disposed above the workbench 1; a second raw material storage tank 26, a container for storing a second type of raw material to be mixed, is disposed above the workbench 1; a mixing tank 28, a container for mixing the raw materials, is mounted on the upper surface of the workbench 1; a metering pump 11, a pump for accurately metering and conveying the raw materials, is mounted above the workbench 1; the output end of the metering pump 11 is connected to the upper surface of the mixing tank 28; the input end of the metering pump 11 is connected to a main pipe 10; a tee pipe 25, a pipe component for connecting the main pipe 10 and a first conveying pipe 3 and a second conveying pipe 4, is connected to the outer surface of the tee pipe 25; the first conveying pipe 3 and the second conveying pipe 4 are respectively connected to the outer surface of the tee pipe 25. One end of pipe 3 away from the three-way pipe 25 is connected to the outer surface of the first raw material storage tank 2, and one end of the second conveying pipe 4 away from the three-way pipe 25 is connected to the outer surface of the second raw material storage tank 26. The outer surfaces of the first conveying pipe 3 and the second conveying pipe 4 are each equipped with a first electronic valve 5, which controls the flow of raw materials in the first conveying pipe 3 and the second conveying pipe 4. A motor 12 is installed on the upper surface of the mixing tank 28, which drives the stirring shaft 19 to rotate. The output end of the motor 12 passes through the mixing tank 28 and is connected to the stirring shaft 19. The stirring shaft 19 is vertically installed at the center of the mixing tank 28 and is driven to rotate by the motor 12. Multiple double-layer propeller blades are assembled on the outer surface of the shaft. Through the reverse spiral structure of the main and auxiliary blades, a dual convection effect of axial lifting and radial shearing is formed in the tank, which realizes efficient stirring of raw materials. Multiple heaters 18 are installed inside the mixing tank 28 for heating the raw materials in the mixing tank 28.

[0019] In this embodiment, a plurality of first support legs 23 are installed on the upper surface of the workbench 1, and a support plate 24 is installed on the upper surface of the plurality of first support legs 23 together, for cooperating with the first support legs 23 to provide support for the first raw material storage tank 2 and the second raw material storage tank 26. The upper surface of the support plate 24 is connected to the bottom surface of the first raw material storage tank 2 and the bottom surface of the second raw material storage tank 26.

[0020] In this embodiment, a fixing plate 27 is installed on the right side of the workbench 1, and a post-processing box 6 is installed on the upper surface of the fixing plate 27, which is a container for receiving and processing the mixed raw materials.

[0021] In this embodiment, a centrifugal pump 22 is installed above the fixing plate 27 to transport the mixed raw materials from the mixing tank 28 to the subsequent processing tank 6. The output end of the centrifugal pump 22 is connected to the outer surface of the subsequent processing tank 6.

[0022] In this embodiment, the input end of the centrifugal pump 22 is connected to the discharge pipe 21, and a second electronic valve 20 is installed on the outer surface of the discharge pipe 21 to control the flow of raw materials in the discharge pipe 21. The end of the discharge pipe 21 away from the centrifugal pump 22 is connected to the outer surface of the mixing tank 28.

[0023] In this embodiment, a centrifugal fan 13 is installed above the workbench 1 to transport exhaust gas from the mixing tank 28 to the purification box 17 through the exhaust gas conveying pipe 8. The input end of the centrifugal fan 13 is connected to the upper surface of the mixing tank 28. A controller 29 is installed on the upper surface of the workbench 1 to control the entire equipment operation process. Multiple second support legs 7 are welded to the bottom surface of the workbench 1.

[0024] In this embodiment, a purification box 17 is installed on the upper surface of the workbench 1, which is a container for treating the waste gas generated during the stirring process. The output end of the centrifugal fan 13 is connected to a waste gas conveying pipe 8, which is a pipe for conveying the waste gas generated during the stirring process to the purification box 17. The end of the waste gas conveying pipe 8 away from the centrifugal fan 13 is connected to the upper surface of the purification box 17.

[0025] In this embodiment, a filter plate 15 is installed inside the purification box 17 to remove dust and particles from the exhaust gas. An activated carbon honeycomb plate 16 is installed inside the purification box 17 to adsorb harmful substances in the exhaust gas. An exhaust pipe 14 is connected to the outer surface of the purification box 17. A door 9 is hinged to the front of the purification box 17.

[0026] Working principle: When the equipment is running, the operator first pours the prepared materials into the first raw material storage tank 2 and the second raw material storage tank 26 respectively. After the feeding is completed, the metering pump 11 is started by the controller 29. With the cooperation of the main pipeline 10, the tee pipe 25, and the first conveying pipe 3, the raw materials in the first raw material storage tank 2 are conveyed to the mixing tank 28. At the same time, the first electronic valve 5 on the first conveying pipe 3 is opened. When the conveying volume reaches the preset parameter of the controller 29, the metering pump 11 automatically stops and then closes the first electronic valve 5 on the first conveying pipe 3. Then, the first electronic valve 5 on the second conveying pipe 4 is opened, and the metering pump 11 is started. The raw materials are sent into the mixing tank 28 through the second conveying pipe 4, the tee pipe 25, and the main pipeline 10. The metering pump 11 is turned off after the set value is reached. Pump 11 is activated, and then motor 12 is started by controller 29 to drive stirring shaft 19 to stir the raw materials in stirring tank 28. At the same time, heater 18 is started to heat the raw materials. If toxic gases or waste gases are generated during the stirring process, centrifugal fan 13 is started simultaneously to send the waste gas in stirring tank 28 into purification box 17 through waste gas conveying pipe 8. The waste gas first passes through filter plate 15 in purification box 17 to remove dust and particles, and then passes through activated carbon honeycomb plate 16 to adsorb aromatic substances such as benzene, toluene, and xylene, as well as malodorous gases such as hydrogen sulfide and ammonia. Finally, it is discharged through exhaust pipe 14. After the raw materials in stirring tank 28 are stirred, centrifugal pump 22 is started by controller 29 and the second electronic valve 20 on discharge pipe 21 is opened to transport the raw materials to subsequent processing box 6 through discharge pipe 21.

[0027] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A metering silicone-based polycarbonate flame retardant mixing apparatus, characterized by, The system includes a workbench (1), a first raw material storage tank (2) above the workbench (1), a second raw material storage tank (26) above the workbench (1), a mixing tank (28) mounted on the upper surface of the workbench (1), a metering pump (11) mounted above the workbench (1), the output end of the metering pump (11) being connected to the upper surface of the mixing tank (28), the input end of the metering pump (11) being connected to a main pipe (10), the end of the main pipe (10) away from the metering pump (11) being connected to a three-way pipe (25), and the outer surface of the three-way pipe (25) being connected to a first conveying pipe. (3) and the second conveying pipe (4), the end of the first conveying pipe (3) away from the three-way pipe (25) is connected to the outer surface of the first raw material storage tank (2), the end of the second conveying pipe (4) away from the three-way pipe (25) is connected to the outer surface of the second raw material storage tank (26), the outer surfaces of the first conveying pipe (3) and the second conveying pipe (4) are both equipped with a first electronic valve (5), the upper surface of the stirring tank (28) is equipped with a motor (12), the output end of the motor (12) passes through the stirring tank (28) and is equipped with a stirring shaft (19), and the interior of the stirring tank (28) is equipped with multiple heaters (18).

2. A silicone-based polycarbonate flame retardant mixing apparatus for dosing according to claim 1, characterized in that, The upper surface of the workbench (1) is equipped with a plurality of first support legs (23), and the upper surfaces of the plurality of first support legs (23) are together equipped with a support plate (24). The upper surface of the support plate (24) is connected to the bottom surface of the first raw material storage tank (2) and the bottom surface of the second raw material storage tank (26).

3. The mixing equipment for quantitatively feeding organosilicon-based polycarbonate flame retardants according to claim 2, characterized in that, A fixing plate (27) is installed on the right side of the workbench (1), and a post-processing box (6) is installed on the upper surface of the fixing plate (27).

4. The mixing equipment for quantitatively feeding organosilicon-based polycarbonate flame retardants according to claim 3, characterized in that, A centrifugal pump (22) is installed above the fixed plate (27), and the output end of the centrifugal pump (22) is connected to the outer surface of the subsequent processing box (6).

5. The mixing equipment for quantitatively feeding organosilicon-based polycarbonate flame retardants according to claim 4, characterized in that, The centrifugal pump (22) has an input end connected to a discharge pipe (21), and a second electronic valve (20) is installed on the outer surface of the discharge pipe (21). The end of the discharge pipe (21) away from the centrifugal pump (22) is connected to the outer surface of the mixing tank (28).

6. The mixing equipment for quantitatively feeding organosilicon-based polycarbonate flame retardants according to claim 5, characterized in that, A centrifugal fan (13) is installed above the workbench (1). The input end of the centrifugal fan (13) is connected to the upper surface of the mixing tank (28). A controller (29) is installed on the upper surface of the workbench (1). Multiple second support legs (7) are welded to the bottom surface of the workbench (1).

7. The mixing equipment for quantitatively feeding organosilicon-based polycarbonate flame retardants according to claim 6, characterized in that, The upper surface of the workbench (1) is equipped with a purification box (17), and the output end of the centrifugal fan (13) is connected to an exhaust gas conveying pipe (8). The end of the exhaust gas conveying pipe (8) away from the centrifugal fan (13) is connected to the upper surface of the purification box (17).

8. The mixing equipment for quantitatively feeding organosilicon-based polycarbonate flame retardants according to claim 7, characterized in that, The purification box (17) is equipped with a filter plate (15) and an activated carbon honeycomb plate (16). The outer surface of the purification box (17) is connected to an exhaust pipe (14). The front of the purification box (17) is hinged with a door (9).

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