Preparation equipment of PA6 material with uniform dispersion structure of flame-retardant component
By introducing a multi-point feeding structure driven by a rotating tube and servo motor, as well as automated control of the stirring rod and stirring blades, into the PA6 material preparation equipment, the problems of secondary agglomeration and uneven mixing of flame retardants were solved, and uniform dispersion and efficient mixing of flame retardants were achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU TENGYUE NEW MATERIAL TECH CO LTD
- Filing Date
- 2025-11-28
- Publication Date
- 2026-06-19
Smart Images
Figure CN224374552U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of material preparation technology, and in particular to a PA6 material preparation device with a uniformly dispersed structure of flame-retardant components. Background Technology
[0002] The equipment for preparing PA6 materials mainly includes nylon granulators, meltblown filter production lines, extruders, and mixers. The specific equipment type depends on the production process and product form. The mixer is mainly used for pretreatment and mixing of raw materials in the early stage of preparation, laying the foundation for the subsequent extrusion process. During production, PA6 resin, flame retardants, antioxidants, and other additives are added to the machine according to the ratio. The centrifugal force generated by its high-speed stirring can initially and uniformly mix the components, avoid the agglomeration of flame retardants, and prevent uneven concentration of flame retardant components in the later extrusion process. It is an important pre-processing equipment to ensure the dispersion of flame retardant components in the final product.
[0003] To address the aforementioned issues, existing patents have provided solutions. However, existing mixing tanks lack a structure for dispersing and feeding materials. As a result, for commonly used flame retardants such as organophosphorus compounds and magnesium hydroxide, especially granular flame retardants, the fixed feeding structure cannot break up the secondary agglomerates formed during transportation. After the material is discharged from the feeding port, it is easy to form a cone-shaped accumulation at the bottom of the mixing tank, resulting in uneven initial mixing.
[0004] To address this, a device for preparing PA6 materials with a uniformly dispersed structure of flame-retardant components is proposed. Utility Model Content
[0005] The purpose of this invention is to provide a PA6 material preparation device with a uniformly dispersed structure of flame-retardant components. This device solves the problem that existing material preparation methods lack a structure for dispersing and feeding materials. As a result, for commonly used flame retardants such as organophosphorus compounds and magnesium hydroxide, especially granular flame retardants, the fixed feeding structure cannot break the secondary agglomerates formed during transportation. After the material is discharged from the feeding port, it is easy to form a cone-shaped accumulation at the bottom of the mixing tank, thus causing uneven initial mixing.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a PA6 material preparation device with a uniformly dispersed flame-retardant component structure, comprising a mixing tank, a feeding mechanism fixedly connected to the left side of the mixing tank, and a stirring mechanism rotatably connected to the top of the inner side of the mixing tank. The feeding mechanism includes a mounting hole, a rotating tube, several feeding holes, a feed pipe, a fixing rod, a rotating ring, a gear, a servo motor, and a support beam. The mounting hole is located at the top of the left side of the mixing tank, the rotating tube is rotatably connected to the inner side of the mounting hole, the right side of the rotating tube extends through and into the inner side of the mixing tank, the feeding holes are located on the right side of the rotating tube, the left side of the rotating tube is rotatably connected to the right side of the feed pipe, the feed pipe is fixedly connected to the top of the support beam, and the fixing rod is welded to the left side of the mixing tank.
[0007] Preferably, the rotating ring is rotatably connected to the left side of the fixed rod, the gears are fixedly connected to the surface of the rotating ring and the surface of the rotating tube respectively, the two gears mesh with each other, the servo motor is installed on the inner side of the support beam, the left side of the rotating ring is connected to the connecting shaft by a flat key, the output end of the right side of the servo motor is fixedly connected to the left side of the connecting shaft, and the support beam is welded to the left side of the mixing tank.
[0008] Preferably, the stirring mechanism includes a stirring rod, three stirring blades, a stepper motor, a discharge pipe, a solenoid one-way valve, a feeding pipe, and a PLC controller, with the stirring rod rotatably connected to the top of the inner side of the mixing tank.
[0009] Preferably, the stirring blade is welded to the surface of the stirring rod, the stepper motor is mounted on the top of the mixing tank, the top of the stirring rod is connected to a connecting shaft via a flat key, and the output end of the bottom of the stepper motor passes through the mixing tank and is fixedly connected to the top of the connecting shaft.
[0010] Preferably, the discharge pipe is fixedly connected to the bottom of the mixing tank, the electromagnetic one-way valve is fixedly connected to the surface of the bottom of the discharge pipe, the feeding pipe is fixedly connected to the top of the mixing tank, and the PLC controller is installed at the bottom of the front side of the support beam.
[0011] Preferably, both the feed pipe and the feeding pipe are fitted with plugs at their tops, and the surface of the plugs is engraved with anti-slip textures.
[0012] Preferably, a support plate is welded to the bottom of the surface of the mixing tank, a support column is welded to the bottom of the support plate, and the bottom of the support column is engraved with anti-slip texture.
[0013] Preferably, a sealing ring is welded to the right side of the feed pipe, and the right side of the inner side of the sealing ring is rotatably connected to the left side of the rotating pipe.
[0014] Preferably, the mixing tank has an insulation cavity on its inner wall, and an insulation pad is fixedly connected to the inner wall of the insulation cavity.
[0015] Preferably, a transparent observation window is provided on the front side of the mixing tank, and the surface of the transparent observation window is coated with an anti-stick coating.
[0016] Compared with the prior art, the beneficial effects of this utility model are:
[0017] 1. The rotating tube in the feeding mechanism of this application can rotate stably under the drive of a servo motor and gears. With the help of several feeding holes on its right side, the flame retardant can be dynamically fed into the mixing tank from the rotating feeding holes, avoiding the formation of high concentration accumulation in a single area. At the same time, the slight centrifugal force generated during the rotation can help break the secondary agglomerates of the flame retardant, improve the uniformity of the initial distribution of the material, and reduce the dispersion difficulty for the subsequent stirring process.
[0018] 2. The mixing mechanism of this application adopts a combination of a mixing rod and three mixing blades. The three mixing blades are distributed along the axial direction of the mixing rod. At the same time, the driving method of the stepper motor can realize the control of the mixing speed. The stepper motor and the electromagnetic single-way valve of the discharge pipe are electrically connected to the PLC controller, which can realize the automatic linkage from mixing to discharge. The mixing time is preset by the PLC controller. After the preset time is reached, the stepper motor is automatically controlled to stop and the electromagnetic single-way valve is opened to complete the discharge without manual intervention. Attached Figure Description
[0019] Figure 1 This is an overall structural diagram of the PA6 material preparation equipment with a uniformly dispersed flame-retardant component structure according to the present invention.
[0020] Figure 2 This is a schematic diagram of the material feeding hole of this utility model;
[0021] Figure 3 This is a schematic diagram of the mounting hole structure of this utility model;
[0022] Figure 4 This is a schematic diagram of the stirring mechanism of this utility model;
[0023] Figure 5 This is a schematic diagram of the structure of the thermal insulation pad of this utility model.
[0024] In the diagram, 1. Mixing tank; 2. Feeding mechanism; 21. Mounting hole; 22. Rotating tube; 23. Feeding hole; 24. Feeding pipe; 25. Fixed rod; 26. Rotating ring; 27. Gear; 28. Servo motor; 29. Support beam; 3. Stirring mechanism; 31. Stirring rod; 32. Stirring blade; 33. Stepper motor; 34. Discharge pipe; 35. Solenoid one-way valve; 36. Feeding pipe; 37. PLC controller; 4. Plug; 5. Support plate; 6. Support column; 7. Sealing ring; 8. Insulation chamber; 9. Insulation pad; 10. Transparent observation window. Detailed Implementation
[0025] 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.
[0026] Please see Figure 1-5 The present invention provides the following technical solution:
[0027] A PA6 material preparation device with a uniformly dispersed flame-retardant component structure includes a mixing tank 1. A feeding mechanism 2 is fixedly connected to the left side of the mixing tank 1, and a stirring mechanism 3 is rotatably connected to the top of the inner side of the mixing tank 1. The feeding mechanism 2 includes a mounting hole 21, a rotating tube 22, several feeding holes 23, a feed pipe 24, a fixing rod 25, a rotating ring 26, a gear 27, a servo motor 28, and a support beam 29. The mounting hole 21 is opened at the top of the left side of the mixing tank 1. The rotating tube 22 is rotatably connected to the inner side of the mounting hole 21. The right side of the rotating tube 22 penetrates and extends to the inner side of the mixing tank 1. The feeding holes 23 are opened on the right side of the rotating tube 22. The left side of the rotating tube 22 is rotatably connected to the right side of the feed pipe 24. The feed pipe 24 is fixedly connected to the top of the support beam 29. The fixing rod 25 is welded to the left side of the mixing tank 1.
[0028] In this embodiment: the mixing tank 1 provides a stable working space for processes such as feeding and stirring; the mounting hole 21 provides an installation reference for the rotating tube 22; the rotating tube 22, in conjunction with the rotation action, achieves multi-point dynamic feeding, avoiding local accumulation of flame retardant in the tank; the feeding hole 23 allows the flame retardant to be output synchronously from multiple points, forming a surface feeding effect; the feed pipe 24 is the input channel for the flame retardant; the fixing rod 25 provides stable rotation support for the rotating ring 26; the rotating ring 26 is connected to the output shaft of the servo motor 28 via a flat key, and simultaneously linked with the rotating tube 22 via gear 27, realizing the transmission of power from the servo motor 28 to the rotating tube 22 for feeding; the two meshing gears 27 constitute a reduction transmission mechanism, which can convert the high speed of the servo motor 28 into the low speed required by the rotating tube 22, improving the accuracy of feeding rate control; the servo motor 28 can be set to any speed via the PLC controller 37 to adapt to the feeding requirements of different flame retardants; the support beam 29 provides a unified installation reference for components such as the feed pipe 24, servo motor 28, and PLC controller 37.
[0029] Specifically, such as Figure 2 , Figure 3As shown, the rotating ring 26 is rotatably connected to the left side of the fixed rod 25, and the gears 27 are fixedly connected to the surface of the rotating ring 26 and the surface of the rotating tube 22 respectively. The two gears 27 mesh with each other. The servo motor 28 is installed on the inner side of the support beam 29. The left side of the rotating ring 26 is connected to the connecting shaft by a flat key. The output end of the right side of the servo motor 28 is fixedly connected to the left side of the connecting shaft. The support beam 29 is welded to the left side of the mixing tank 1.
[0030] Specifically, such as Figure 4 As shown, the stirring mechanism 3 includes a stirring rod 31, three stirring blades 32, a stepper motor 33, a discharge pipe 34, a solenoid single-way valve 35, a feeding pipe 36, and a PLC controller 37. The stirring rod 31 is rotatably connected to the top of the inner side of the mixing tank 1.
[0031] Specifically, such as Figure 4 As shown, the stirring blade 32 is welded to the surface of the stirring rod 31, the stepper motor 33 is installed on the top of the mixing tank 1, the top of the stirring rod 31 is connected to the connecting shaft by a flat key, and the output end of the bottom of the stepper motor 33 passes through the mixing tank 1 and is fixedly connected to the top of the connecting shaft.
[0032] In this embodiment: by setting the top of the stirring rod 31 to be connected to the output shaft of the stepper motor 33 via a connecting shaft, the efficient transmission of stirring power is ensured. The stirring blade 32 can mix the flame retardant and PA6 material. The stepper motor 33 can provide power for the rotation of the stirring rod 31. The discharge pipe 34, in conjunction with gravity, allows the mixture to be discharged quickly. The electromagnetic single-way valve 35 is controlled by the PLC controller 37 to open or close the discharge pipe 34. The feeding pipe 36 is fixed to the top of the mixing tank 1, providing an independent feeding channel for PA6 resin and antioxidants. The PLC controller 37 can control the servo motor 28, the stepper motor 33, and the electromagnetic single-way valve 35.
[0033] Specifically, such as Figure 4 As shown, the discharge pipe 34 is fixedly connected to the bottom of the mixing tank 1, the electromagnetic single-way valve 35 is fixedly connected to the surface of the bottom of the discharge pipe 34, the feeding pipe 36 is fixedly connected to the top of the mixing tank 1, and the PLC controller 37 is installed at the bottom of the front side of the support beam 29.
[0034] Specifically, such as Figure 5 As shown, the tops of the feed pipe 24 and the feeding pipe 36 are both fitted with plugs 4, and the surface of the plugs 4 is engraved with anti-slip texture.
[0035] In this embodiment: by setting the plug 4, dust is prevented from entering the pipe and contaminating the material, while also preventing the material from getting damp and deteriorating. The anti-slip texture increases the friction of the hand, making it convenient for operators to quickly open and close the pipe.
[0036] Specifically, such as Figure 5 As shown, a support plate 5 is welded to the bottom of the surface of the mixing tank 1, and a support column 6 is welded to the bottom of the support plate 5. The bottom of the support column 6 is engraved with anti-slip texture.
[0037] Specifically, such as Figure 2 As shown, a sealing ring 7 is welded to the right side of the feed pipe 24, and the right side of the inner side of the sealing ring 7 is rotatably connected to the left side of the rotating pipe 22.
[0038] In this embodiment: by setting the support plate 5, the weight of the mixing tank 1 is evenly distributed to multiple support columns 6, avoiding structural deformation caused by excessive local stress. By setting the support columns 6, the mixing tank 1 is provided with stable support. By setting the anti-slip texture, the friction with the ground is increased. By setting the sealing ring 7, the flame retardant dust is prevented from leaking from the rotation gap, thus protecting the production environment.
[0039] Specifically, such as Figure 5 As shown, the inner wall of the mixing tank 1 is provided with a heat preservation cavity 8, and a heat preservation pad 9 is fixedly connected to the inner wall of the heat preservation cavity 8.
[0040] Specifically, such as Figure 1 As shown, a transparent observation window 10 is provided on the front side of the mixing tank 1, and the surface of the transparent observation window 10 is coated with an anti-stick coating.
[0041] In this embodiment: by setting up the insulation cavity 8, space is provided for the installation of the insulation pad 9. The insulation pad 9 is made of high temperature resistant and low thermal conductivity aluminum silicate fiber material, which has excellent insulation effect. By setting up the transparent observation window 10, which is made of high temperature resistant tempered glass, it is ensured that the operator can observe the mixing state of the material in real time and promptly detect problems such as agglomeration and accumulation. By setting up the anti-stick coating, the material adhesion is avoided from affecting the clarity of observation and the cleaning frequency is reduced.
[0042] Working Principle: First, the operator opens the caps 4 at the top of the feed pipe 24 and the feeding pipe 36 respectively, pours the flame retardant into the feed pipe 24, and pours PA6 resin and antioxidants into the feeding pipe 36 according to the preset ratio. After feeding, the caps 4 are tightened to prevent dust from entering the pipe and contaminating the material or causing the material to become damp and deteriorate. At the same time, the operator inputs the required process parameters through the PLC controller 37, including the flame retardant feeding rate, stirring time, stirring speed, and discharge delay time. After the parameters are set, the equipment is started. Then, the PLC controller 37 sends signals to the servo motor. 28 sends a command, and the output end of the servo motor 28 drives the rotating ring 26 to rotate through the connecting shaft connected by a key. Since the gear 27 on the surface of the rotating ring 26 meshes with the surface of the rotating tube 22, and the rotating ring 26 is stably supported by the fixing rod 25, the gear 27 transmission converts the high speed of the servo motor 28 into the low speed required by the rotating tube 22. The rotating tube 22 rotates stably in the mounting hole 21 on the top left side of the mixing tank 1. Its right side extension into the tank is evenly sprayed with the flame retardant conveyed by the feed pipe 24 in a multi-point, planar manner through several evenly distributed discharge holes 23. The PA6 resin and additives in the feeding pipe 36 are then naturally fed into the mixing tank 1. Simultaneously, the PLC controller 37 starts the stepper motor 33. The bottom output end of the stepper motor 33 passes through the mixing tank 1 and drives the stirring rod 31 to rotate at high speed via a connecting shaft. The three stirring blades 32 welded to the surface of the stirring rod 31 exert a shearing force on the material. At this time, the operator can observe the mixing status of the material in the tank in real time through the transparent observation window 10. Afterwards, when the stirring time reaches the preset value, the PLC controller 37 issues a stirring stop command, and the stepper motor 33 stops. The stirring rod 31 and stirring blade 32 stop rotating synchronously, and the material is allowed to settle in the mixing tank 1, allowing the uniformly mixed material to naturally settle to the bottom of the tank. Finally, after the stirring stops, the PLC controller 37 sends an opening command to the electromagnetic single-way valve 35 on the surface of the discharge pipe 34. The electromagnetic single-way valve 35 opens, and the uniformly mixed PA6 flame retardant material is discharged from the discharge pipe 34 and enters subsequent twin-screw extrusion and other processes. After the discharge is completed, the PLC controller 37 commands the electromagnetic single-way valve 35 to close, and the operator opens the plug 4 again to replenish the material, and the equipment enters the next batch production cycle.
[0043] The above are merely preferred embodiments of the present utility model and are 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 device for preparing a PA6 material having a homogeneous dispersion of a flame-retardant component, comprising a mixing tank (1), characterized in that: A feeding mechanism (2) is fixedly connected to the left side of the mixing tank (1), and a stirring mechanism (3) is rotatably connected to the top of the inner side of the mixing tank (1). The feeding mechanism (2) includes a mounting hole (21), a rotating tube (22), several feeding holes (23), a feeding tube (24), a fixing rod (25), a rotating ring (26), a gear (27), a servo motor (28), and a support beam (29). The mounting hole (21) is opened at the top of the left side of the mixing tank (1). The rotating tube (22) is rotatably connected to the inner side of the mounting hole (21). The right side of the rotating tube (22) extends through and into the inner side of the mixing tank (1). The feeding holes (23) are opened on the right side of the rotating tube (22). The left side of the rotating tube (22) is rotatably connected to the right side of the feeding tube (24). The feeding tube (24) is fixedly connected to the top of the support beam (29). The fixing rod (25) is welded to the left side of the mixing tank (1).
2. The PA6 material preparation equipment with a uniformly dispersed flame-retardant component structure according to claim 1, characterized in that: The rotating ring (26) is rotatably connected to the left side of the fixed rod (25). The gears (27) are fixedly connected to the surface of the rotating ring (26) and the surface of the rotating tube (22) respectively. The two gears (27) mesh with each other. The servo motor (28) is installed on the inner side of the support beam (29). The left side of the rotating ring (26) is connected to the connecting shaft by a flat key. The output end of the right side of the servo motor (28) is fixedly connected to the left side of the connecting shaft. The support beam (29) is welded to the left side of the mixing tank (1).
3. The PA6 material preparation equipment with a uniformly dispersed flame-retardant component structure according to claim 1, characterized in that: The stirring mechanism (3) includes a stirring rod (31), three stirring blades (32), a stepper motor (33), a discharge pipe (34), a solenoid single-way valve (35), a feeding pipe (36), and a PLC controller (37). The stirring rod (31) is rotatably connected to the top of the inner side of the mixing tank (1).
4. The PA6 material preparation equipment with a uniformly dispersed flame-retardant component structure according to claim 3, characterized in that: The stirring blade (32) is welded to the surface of the stirring rod (31), the stepper motor (33) is installed on the top of the mixing tank (1), the top of the stirring rod (31) is connected to the connecting shaft by a flat key, and the output end of the bottom of the stepper motor (33) passes through the mixing tank (1) and is fixedly connected to the top of the connecting shaft.
5. The PA6 material preparation equipment with a uniformly dispersed flame-retardant component structure according to claim 3, characterized in that: The discharge pipe (34) is fixedly connected to the bottom of the mixing tank (1), the electromagnetic single-way valve (35) is fixedly connected to the surface of the bottom of the discharge pipe (34), the feeding pipe (36) is fixedly connected to the top of the mixing tank (1), and the PLC controller (37) is installed at the bottom of the front side of the support beam (29).
6. The PA6 material preparation equipment with a uniformly dispersed flame-retardant component structure according to claim 1, characterized in that: The top of the feed pipe (24) and the feeding pipe (36) are both fitted with plugs (4), and the surface of the plugs (4) is engraved with anti-slip texture.
7. The PA6 material preparation equipment with a uniformly dispersed flame-retardant component structure according to claim 1, characterized in that: A support plate (5) is welded to the bottom of the surface of the mixing tank (1), and a support column (6) is welded to the bottom of the support plate (5). The bottom of the support column (6) is engraved with anti-slip texture.
8. The PA6 material preparation equipment with a uniformly dispersed flame-retardant component structure according to claim 1, characterized in that: A sealing ring (7) is welded to the right side of the feed pipe (24), and the right side of the inner side of the sealing ring (7) is rotatably connected to the left side of the rotating pipe (22).
9. The PA6 material preparation equipment with a uniformly dispersed flame-retardant component structure according to claim 1, characterized in that: The mixing tank (1) has an insulation cavity (8) on its inner wall, and an insulation pad (9) is fixedly connected to the inner wall of the insulation cavity (8).
10. The PA6 material preparation equipment with a uniformly dispersed flame-retardant component structure according to claim 1, characterized in that: A transparent observation window (10) is provided on the front side of the mixing tank (1), and the surface of the transparent observation window (10) is coated with an anti-stick coating.