A cooling device for the production of flame retardant masterbatch for new energy vehicles

Abstract

This invention discloses a cooling device for producing flame-retardant masterbatch for new energy vehicles, installed at the discharge end of a cutting machine. It includes a flow cooling component, a particle distribution feedback component, and a control component. The flow cooling component includes a cooling airflow chamber that is gradually inclined downwards along the particle's travel direction and a vibrating screen positioned directly above the cooling airflow chamber. The cooling airflow chamber can form an airflow cushion above the vibrating screen. The particle distribution feedback component includes a mounting frame and fan blades rotatably connected to the mounting frame. The rotation shaft of the fan blades is connected to a speed sensor, which determines the degree of particle distribution based on the fan blade rotation speed. The control component adjusts the inclination angle of the cooling airflow chamber and the vibration amplitude of the vibrating screen based on the speed sensor's detection value. The lower the fan blade speed, the smaller the inclination angle of the cooling airflow chamber, and the larger the vibration amplitude of the vibrating screen. This achieves sufficient cooling while preventing moisture retention inside the particle, ensuring the flame-retardant effect of the masterbatch.

Description

Technical Field

[0001] This invention relates to the field of flame retardant masterbatch production technology, and in particular to a cooling device for the production of flame retardant masterbatch for new energy vehicles. Background Technology

[0002] With the rapid development of the new energy vehicle industry, the safety of its core component—the power battery system—has become paramount. Many components, such as the battery pack casing, module brackets, electrical connectors, and wiring harness sheaths, are made of engineering plastics. To prevent the spread of fire caused by battery thermal runaway, these plastic components must possess extremely high flame-retardant ratings. Flame-retardant masterbatch is the core material for manufacturing highly flame-retardant plastic components. Its performance stability and reliability directly affect the safety of the entire vehicle.

[0003] In the production process of flame-retardant masterbatch, the cooling process after granulation is crucial. The high-temperature granules cut by the pelletizer need to be rapidly cooled and solidified to prevent granule adhesion and deformation, and to ensure their physical properties. Currently, water tank cooling is the most common method used in the industry. The high-temperature granules fall directly into a water tank filled with cooling water, achieving rapid cooling through heat exchange between the water and the granules. Air cooling or spray cooling is also used in some cases, but the cooling efficiency or uniformity is often inferior to water tank cooling, thus limiting its application.

[0004] In existing cooling methods, especially water cooling, the flame retardants, dispersants, and other additives in flame retardant masterbatches easily absorb and retain moisture on their particle surfaces and in their internal pores. Simultaneously, when high-temperature granules are instantly immersed in cold water, the surface of the granules contracts rapidly while the interior remains at a high temperature. This intense thermal stress can not only cause micro-cracks or voids within the granules but also provide pathways for moisture penetration. The moisture absorbed and retained within the granules during this cooling process is difficult to completely remove in subsequent drying processes, thus having an extremely adverse effect on the flame retardant effect of the masterbatch. Summary of the Invention

[0005] The purpose of this invention is to provide a cooling device for the production of flame retardant masterbatch for new energy vehicles, which solves the problem that the retention of moisture inside the granules during the current flame retardant masterbatch cooling process reduces the flame retardant effect of the masterbatch.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A cooling device for the production of flame-retardant masterbatch for new energy vehicles, located at the discharge end of a pelletizer, includes:

[0008] A flow cooling assembly includes a cooling airflow chamber that is gradually inclined downward along the direction of particle travel and a vibrating screen located directly above the cooling airflow chamber. The cooling airflow chamber is capable of forming an airflow pad above the vibrating screen. The vibrating screen has a feed end and a discharge end.

[0009] The particle distribution feedback component is located on the side above the vibrating screen near the feed end. It includes a mounting frame and a fan blade rotatably connected to the mounting frame. A speed sensor is connected to the rotation shaft of the fan blade to determine the degree of particle distribution based on the rotation speed of the fan blade.

[0010] A control component that adjusts the tilt angle of the cooling airflow chamber and the vibration amplitude of the vibrating screen based on the detection value of the speed sensor;

[0011] The lower the rotational speed of the fan blades, the smaller the inclination angle of the cooling airflow chamber, and the greater the vibration amplitude of the vibrating screen.

[0012] Optionally, the cooling airflow chamber is divided into a high-pressure cooling zone, a constant-pressure cooling zone, and a low-pressure cooling zone along the direction of particle movement. The air temperature increases sequentially from the high-pressure cooling zone to the low-pressure cooling zone. Guide ribs are provided on the screen corresponding to the area of ​​the constant-pressure cooling zone.

[0013] Optionally, the cooling device for producing flame-retardant masterbatch for new energy vehicles further includes a support base, with the bottom of the cooling airflow chamber rotatably connected to the support base near the low-pressure cooling zone. The control component includes:

[0014] A lifting drive unit is provided between the support base and the cooling airflow chamber, and is used to drive the cooling airflow chamber to lift and lower the side near the high-pressure cooling zone.

[0015] A first vibration motor is connected to the cooling airflow chamber, and the output shaft of the first vibration motor is connected to the vibrating screen to drive the vibrating screen to vibrate.

[0016] Optionally, the cooling airflow chamber is connected to a mounting column, the first vibration motor is mounted on the mounting column, the vibrating screen is movably connected to the mounting column, and an adjustment component is provided on the mounting column for adjusting the installation height of the vibrating screen.

[0017] Optionally, the distance between the plane where the airflow cushion is located and the plane where the vibrating screen is located is L, the average height of the granules is h, and the vibration range of the vibrating screen is d, wherein L is greater than h and d is less than the difference between L and h.

[0018] Optionally, the cooling device for producing flame retardant masterbatch for new energy vehicles further includes a control component, which is electrically connected to the speed sensor, the lifting drive unit, and the first vibration motor.

[0019] Optionally, the vibrating screen is provided with arc-shaped rolled edges on both sides along the direction of particle travel.

[0020] Optionally, the cooling device for producing flame-retardant masterbatch for new energy vehicles further includes a bulk material assembly, which includes:

[0021] A bulk material screen is provided above the area of ​​the vibrating screen corresponding to the constant pressure cooling zone and the low pressure cooling zone, and bulk material bars are arranged on the bulk material screen along the guide ribs;

[0022] The second vibration motor is used to drive the bulk material screen to vibrate, and the vibration direction of the bulk material screen is opposite to that of the vibrating screen.

[0023] Optionally, a feeding assembly is provided between the discharge end of the pelletizer and the flow cooling assembly, the feeding assembly comprising:

[0024] A conversion frame is connected to the support base, and the middle part of the conversion frame is a feeding station;

[0025] A high-temperature feed inlet is connected to one side of the conversion frame. The high-temperature feed inlet includes a receiving box and a water mist nozzle disposed inside the receiving box.

[0026] A low-temperature feed inlet is connected to the other side of the conversion frame, including a feed trough and a material distribution plate rotatably disposed in the feed trough. Both the feed trough and the material distribution plate are provided with turbulence columns.

[0027] The conversion frame can switch between the high-temperature feed port and the low-temperature feed port, and is fixed at the feeding station respectively.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] This invention provides a cooling device for the production of flame-retardant masterbatch for new energy vehicles, installed at the rear end of a pelletizer's discharge end. After the pelletizer cuts the strip-shaped melt into pellets, the pellets fall onto an airflow cushion formed by a cooling airflow chamber. The pellets are suspended and tumbled on the airflow cushion, allowing for full contact with the cold air. The cooling airflow chamber is tilted, enabling the pellets to be continuously conveyed forward in a suspended state, thus achieving continuous cooling of the flame-retardant masterbatch. During the cooling process, the flame-retardant masterbatch does not come into contact with water, and no moisture remains on its surface or inside. The flame-retardant effect of the masterbatch is not weakened by moisture, which helps ensure the high stability and reliability of the masterbatch, enabling its application in new energy vehicles. When used in automotive flame-retardant plastic parts, this technology improves the safety of these parts. Simultaneously, the degree of particle dispersion is determined by the fan blade rotation speed. Higher fan blade speed indicates greater particle dispersion, allowing the control components to increase the tilt angle of the cooling airflow chamber and decrease the vibration amplitude of the vibrating screen, thus accelerating the particle conveying speed. Conversely, lower fan blade speed indicates lower particle dispersion and potential particle agglomeration. Therefore, the control components reduce the tilt angle of the cooling chamber and increase the vibration amplitude of the vibrating screen, reducing the particle conveying speed and enabling the vibrating screen to disperse any agglomerated particles and ensure thorough cooling. This thorough cooling process prevents moisture retention within the particles, ensuring the flame-retardant effect of the masterbatch. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0032] Figure 1 This is a schematic diagram of a cooling device for the production of flame-retardant masterbatch for new energy vehicles.

[0033] Figure 2 This is a schematic diagram of a cooling device for the production of flame-retardant masterbatch for new energy vehicles.

[0034] Figure 3This is a partial structural diagram of a cooling device for the production of flame-retardant masterbatch for new energy vehicles.

[0035] Figure 4 for Figure 3 Enlarged view of part A in the middle.

[0036] Figure 5 This is a structural cross-sectional view of a cooling device for the production of flame-retardant masterbatch for new energy vehicles.

[0037] Illustrations: 1. Pelletizer; 2. Feeding assembly; 21. Conversion frame; 22. High-temperature feed inlet; 23. Low-temperature feed inlet; 3. Flow cooling assembly; 31. Cooling airflow chamber; 311. High-pressure cooling zone; 312. Constant-pressure cooling zone; 313. Low-pressure cooling zone; 32. Vibrating screen; 321. Guide ribs; 4. Pellet distribution feedback assembly; 41. Mounting frame; 42. Rotating shaft; 43. Fan blades; 44. Speed ​​sensor; 5. Control assembly; 51. Lifting drive unit; 52. First vibrating motor; 6. Bulk assembly; 61. Bulk screen; 62. Second vibrating motor. Detailed Implementation

[0038] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0039] In the description of this invention, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention 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, and therefore should not be construed as a limitation of the invention. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component positioned centrally in the connection.

[0040] In the prior art, the cooling of flame retardant masterbatch mainly adopts water tank cooling. Since the temperature of the flame retardant masterbatch is high during granulation, the masterbatch may stick together and clump. Water tank cooling can effectively avoid the sticking of the flame retardant masterbatch. However, during the cooling process, water is easily retained on the surface and in the internal pores of the flame retardant masterbatch, and the retained water is difficult to remove completely, which weakens the flame retardant effect of the masterbatch.

[0041] Based on this, this invention provides a cooling device for the production of flame-retardant masterbatch for new energy vehicles, installed at the discharge end of a pelletizer, including a flow cooling component, a pellet distribution feedback component, and a control component. The flow cooling component includes a cooling airflow chamber that is gradually inclined downwards along the pellet travel direction and a vibrating screen located directly above the cooling airflow chamber. The cooling airflow chamber can form an airflow cushion above the vibrating screen. The vibrating screen has a feed end and a discharge end. The pellet distribution feedback component is located above the vibrating screen near the feed end. The pellet distribution feedback component includes a mounting frame and fan blades rotatably connected to the mounting frame. A speed sensor is connected to the rotation shaft of the fan blades, and the degree of pellet distribution is determined based on the rotation speed of the fan blades. The control component adjusts the inclination angle of the cooling airflow chamber and the vibration amplitude of the vibrating screen based on the detection value of the speed sensor. Specifically, the higher the speed of the fan blades, the larger the inclination angle of the cooling airflow chamber and the smaller the vibration amplitude of the vibrating screen; conversely, the lower the speed of the fan blades, the smaller the inclination angle of the cooling airflow chamber and the larger the vibration amplitude of the vibrating screen.

[0042] This invention provides a cooling device for the production of flame-retardant masterbatch for new energy vehicles, installed at the rear end of a pelletizer's discharge end. After the pelletizer cuts the strip-shaped melt into pellets, the pellets fall onto an airflow cushion formed by a cooling airflow chamber. The pellets are suspended and tumbled on the airflow cushion, allowing for full contact with the cold air. The cooling airflow chamber is tilted, enabling the pellets to be continuously conveyed forward in a suspended state, thus achieving continuous cooling of the flame-retardant masterbatch. During the cooling process, the flame-retardant masterbatch does not come into contact with water, and no moisture remains on its surface or inside. The flame-retardant effect of the masterbatch is not weakened by moisture, which helps ensure the high stability and reliability of the masterbatch, enabling its application in new energy vehicles. When used in automotive flame-retardant plastic parts, this technology improves the safety of these parts. Simultaneously, the degree of particle dispersion is determined by the fan blade rotation speed. Higher fan blade speed indicates greater particle dispersion, allowing the control components to increase the tilt angle of the cooling airflow chamber and decrease the vibration amplitude of the vibrating screen, thus accelerating the particle conveying speed. Conversely, lower fan blade speed indicates lower particle dispersion and potential particle agglomeration. Therefore, the control components reduce the tilt angle of the cooling chamber and increase the vibration amplitude of the vibrating screen, reducing the particle conveying speed and enabling the vibrating screen to disperse any agglomerated particles and ensure thorough cooling. This thorough cooling process prevents moisture retention within the particles, ensuring the flame-retardant effect of the masterbatch.

[0043] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0044] like Figure 1 , Figure 2 and Figure 3As shown in the figure, this embodiment of the invention provides a cooling device for the production of flame-retardant masterbatch for new energy vehicles. It is suitable for scenarios where strip-shaped melts are cut into cylindrical particles by a pelletizer and then cooled. Since the particles still have a high temperature after being cut, they need to be cooled promptly to prevent clumping. Traditional water tank cooling methods involve directly immersing the granulated particles in water, which effectively prevents clumping, but suffers from the core problem of residual moisture inside the particles during cooling. The flame-retardant masterbatch cooling device provided in this embodiment utilizes air cooling, which not only ensures sufficient dispersion of the particles during cooling but also prevents moisture retention while achieving adequate cooling, thus ensuring the flame-retardant effect of the masterbatch.

[0045] In this embodiment of the invention, the cooling device for the production of flame-retardant masterbatch for new energy vehicles is located at the rear end of the pelletizer's discharge end, and includes a flow cooling component 3, a pellet distribution feedback component 4, and a control component 5. The flow cooling component 3 includes a cooling airflow chamber 31 that is gradually inclined downward along the pellet travel direction and a vibrating screen 32 located directly above the cooling airflow chamber 31. The cooling airflow chamber 31 can form an airflow cushion above the vibrating screen 32, and the vibrating screen 32 has a feed end and a discharge end.

[0046] Specifically, the cooling airflow chamber 31 can be installed in the base tank. The cooling airflow chamber 31 has a cold air module that generates cold air. Multiple air outlets are evenly arranged on the upper surface of the cooling airflow chamber 31. Air outlet nozzles can be installed in the air outlets. The air outlet nozzles can be Venturi nozzles, so that the air pressure ejected by each Venturi nozzle is consistent. Thus, multiple densely distributed Venturi nozzles can form a stable airflow pad above the cooling airflow chamber 31. The vibrating screen 32 is set above the cooling airflow chamber 31 and is parallel to the upper surface of the cooling airflow chamber 31. The cold air generated by the Venturi nozzles can penetrate the vibrating screen 32 and form a stable airflow pad above the vibrating screen 32. The granules fall onto the airflow cushion from the feed end of the vibrating screen 32 and can suspend on the airflow cushion. Since the cooling airflow chamber 31 is gradually inclined downward along the direction from the feed end to the discharge end of the vibrating screen 32, the granules can roll and jump forward on the airflow cushion under the action of gravity. During the conveying process, the granules come into full contact with the cold air to cool them. The clumps of granules that stick together will move closer to the vibrating screen 32 due to their relatively large weight. When the vibrating screen 32 vibrates, it can disperse the clumps of granules, thereby breaking the stickiness of the granules and ensuring that each granule can be fully cooled.

[0047] It should be noted that, based on the average mass of the granules, the air pressure of the cooling airflow chamber 31 is controlled to ensure that the granules are stably suspended in the airflow cushion. Simultaneously, the height of the vibrating screen 32 is adjusted to maintain an appropriate distance between the plane of the airflow cushion and the plane of the vibrating screen 32. When the granules clump together, due to the increased overall mass after clumping, the clumped granules will move closer to the vibrating screen 32, while the granules in contact with the vibrating screen 32 will be dispersed under vibration, which helps each granule achieve sufficient cooling.

[0048] For example, the distance between the plane of the airflow cushion and the plane of the vibrating screen 32 is L, the average height of the particles is h, and the vibration range of the vibrating screen is d, where L is greater than h and d is less than the difference between L and h. For example, it can be made When the granules are not agglomerated, each granule is suspended on the plane of the airflow cushion and will not come into contact with the vibrating screen. The vibrating screen will also not come into contact with the granules when it vibrates. If two granules agglomerate together to form a granule agglomeration mass, the overall weight or height of the granule agglomeration mass will change, and the granule agglomeration mass will move closer to the vibrating screen 32 and come into contact with the vibrating screen, thereby separating the agglomerated granules.

[0049] The particle distribution feedback component 4 is located above the vibrating screen 32 on the side near the feed end. The particle distribution feedback component 4 includes a mounting frame 41 and a fan blade 43 rotatably connected to the mounting frame 41. A speed sensor 44 is connected to the rotation shaft 42 of the fan blade 43. The degree of particle distribution is determined according to the rotation speed of the fan blade 43. The control component 5 controls the tilt angle of the cooling airflow chamber 31 and the vibration amplitude of the vibrating screen 32 according to the detection value of the speed sensor 44. The higher the speed of the fan blade 43, the larger the tilt angle of the cooling airflow chamber 31 and the smaller the vibration amplitude of the vibrating screen 32. Conversely, the lower the speed of the fan blade 43, the smaller the tilt angle of the cooling airflow chamber 31 and the larger the vibration amplitude of the vibrating screen 32.

[0050] Specifically, the mounting frame 41 can be connected to the base groove and is located above the vibrating screen 32. The mounting frame 41 is a strip-shaped structure with an elongated hole in the middle. The length direction of the mounting frame 41 is perpendicular to the direction of the particle's movement. The fan blades 43 are rotatably connected to the elongated hole of the mounting frame 41 through the rotating shaft 42. Multiple sets of fan blades 43 can be arranged at intervals. The rotating shaft 42 is rotatably connected to the mounting frame 41, and the end of the rotating shaft 42 is located outside the mounting frame 41. The speed sensor 44 is connected to the rotating shaft 42 to detect the rotation speed of the rotating shaft 42 in real time. The degree of particle dispersion is determined according to the rotation speed of the fan blades 43, thereby adaptively adjusting the tilt angle of the cooling airflow chamber 31 and the vibration amplitude of the vibrating screen 32 through the control component 5, so as to facilitate sufficient cooling of the particle.

[0051] Understandably, due to the mass of the granules, they will suspend on the airflow cushion. Meanwhile, cool air continues to flow upwards through the granules above the airflow cushion, causing the fan blades 43 to rotate. The volume of this cool air is determined by the density of the granules. The fan blades 43 are set to a normal rotational speed when the granules are evenly dispersed, and the value detected by the speed sensor 44 is compared with this normal rotational speed. If the granules clump together, the amount of cold air passing through them decreases, and the rotation speed of the fan blades 43 slows down. In this case, the control component 5 adjusts the tilt angle of the cooling airflow chamber 31 to decrease and the vibration amplitude of the vibrating screen 32 to increase. This reduces the conveying speed of the granules, allowing them to remain on the airflow cushion for a longer period, thus extending the cooling time. Furthermore, the increased vibration amplitude of the vibrating screen 32 improves the dispersion of the clumps, ensuring they are fully dispersed and effectively cooled. Conversely, if the amount of granules is small and the dispersion is high, the rotation speed of the fan blades 43 increases. This allows for an increase in the tilt angle of the cooling airflow chamber 31 and a decrease in the vibration amplitude of the vibrating screen 32, thereby improving cooling efficiency. Of course, the tilt angle of the cooling airflow chamber 31 will not continuously increase; it will stop rotating after tilting to a certain angle to ensure sufficient cooling time for the granules and achieve adequate cooling.

[0052] like Figure 2 As shown, in the embodiment of the present invention, the cooling airflow chamber 31 is divided into a high-pressure cooling zone 311, a constant-pressure cooling zone 312 and a low-pressure cooling zone 313 along the direction of the granule travel. From the high-pressure cooling zone 311 to the low-pressure cooling zone 313, the air temperature of the cooling airflow chamber 31 increases sequentially, and guide ribs 321 are provided on the vibrating screen 32 in the area corresponding to the constant-pressure cooling zone 312.

[0053] Specifically, the airflow chamber is divided into three independent cooling zones along the direction of the granules' movement: a high-pressure cooling zone 311, a constant-pressure cooling zone 312, and a low-pressure cooling zone 313. Each zone can be independently temperature controlled. The high-temperature granules first fall into the high-pressure cooling zone 311, where the temperature of the cold air is low. The high-temperature granules can be rapidly cooled in the high-pressure cooling zone 311, reducing the possibility of granule sticking. Subsequently, the granules are conveyed to the constant-pressure cooling zone 312. The screen is equipped with guide ribs 321 in the area corresponding to the constant-pressure cooling zone 312. The guide ribs 321 can slow down the conveying speed of the granules and prolong the time required for the granules to flow through the constant-pressure cooling zone 312, so that the granules can be deeply and fully cooled in the constant-pressure cooling zone 312. After that, the granules enter the low-pressure cooling zone 313, where the temperature can be greater than or equal to room temperature, so that the granules can be continuously cooled. In the low-pressure cooling zone 313, the temperature tends to stabilize and approach room temperature, which is conducive to stabilizing the physical state of the output granules.

[0054] like Figure 3 , Figure 4 and Figure 5 As shown, in one embodiment of the present invention, the bottom of the cooling airflow chamber 31 is rotatably connected to the support base on the side near the low-pressure cooling zone 313. The control assembly 5 includes a lifting drive unit 51 and a first vibration motor 52. The lifting drive unit 51 is disposed between the support base and the cooling airflow chamber 31 and is used to drive the cooling airflow chamber 31 to rise and fall on the side near the high-pressure cooling zone 311. The first vibration motor 52 is connected to the cooling airflow chamber 31, and the output shaft of the first vibration motor 52 is connected to the vibrating screen 32 to drive the vibrating screen 32 to vibrate.

[0055] Specifically, the lifting drive unit 51 may include a hydraulic rod and connecting seats. Connecting seats are fixed to both the bearing seat and the bottom of the base groove. The fixed end and the telescopic end of the hydraulic cylinder are rotatably connected to the two connecting seats. When the telescopic end of the hydraulic cylinder extends, it can lift the end of the cooling airflow chamber 31 closest to the high-pressure cooling zone 311, thereby increasing the tilt angle of the cooling airflow chamber 31. Of course, the lifting drive unit 51 can also be driven by a motor, a cylinder, etc., and this invention does not impose any special limitations on this.

[0056] Furthermore, the cooling device for producing flame-retardant masterbatch for new energy vehicles may also include a control component. The control component is electrically connected to the speed sensor 44, the lifting drive unit 51, and the first vibration motor 52. The control component controls the lifting drive unit 51 and the first vibration motor 52 to operate by comparing the detection value of the speed sensor 44 with the normal value.

[0057] For example, a cooling airflow chamber 31 is installed in a base trench, and a mounting column is provided on the base trench. A first vibrating motor 52 is mounted on the mounting column, and a vibrating screen 32 is movably connected to the mounting column. An adjustment component is provided on the mounting column to adjust the installation height of the vibrating screen 32. For instance, a fixed seat is connected to the mounting column by a screw, and the fixed seat has an installation groove. The vibrating screen 32 is movably connected to the installation groove. By adjusting the screw, the height of the fixed seat can be adjusted, thereby adjusting the installation height of the vibrating screen 32. The installation height of the vibrating screen 32 can be adaptively adjusted according to the different heights of the granules, facilitating the full dispersion and cooling of the granules.

[0058] In one embodiment of the present invention, the cooling device for producing flame-retardant masterbatch for new energy vehicles may further include a bulk material assembly 6, which includes a bulk material screen 61 and a second vibration motor 62. The bulk material screen 61 is arranged above the area of ​​the vibrating screen 32 corresponding to the constant pressure cooling zone 312 and the low pressure cooling zone 313, and bulk material bars are arranged along the guide ribs 321 on the bulk material screen 61; the second vibration motor 62 is used to drive the bulk material screen 61 to vibrate, and the vibration direction of the bulk material screen 61 is opposite to the vibration direction of the vibrating screen 32.

[0059] Specifically, the bulk material screen 61 can be connected to the base tank. The bulk material screen 61 is located above the vibrating screen 32, and a bulk material bar is provided on the side of the bulk material screen 61 facing the vibrating screen 32. Multiple bulk material bars are arranged along the guide ribs 321. The bulk material screen 61 is driven to vibrate by the second vibration motor 62. When the granules pass through the constant pressure cooling zone 312 and the low pressure cooling zone 313, they can be fully dispersed under the action of the bulk material bars and the two screens, which is conducive to further cooling of the granules.

[0060] For example, the vibrating screen 32 has arc-shaped rolled edges on both sides along the direction of particle travel. The cold air in the cooling airflow chamber 31 near the two side edges can be blown towards the edge of the vibrating screen 32 along the arc-shaped rolled edges, which can gather the particles at the edge of the vibrating screen 32 towards the center, so that the particles are cooled in a concentrated manner and avoid particle splashing.

[0061] In an exemplary embodiment of the present invention, a feeding assembly 2 is provided between the discharge end of the pelletizer 1 and the flow cooling assembly 3. The feeding assembly 2 includes: a conversion frame 21 connected to the support base, with the middle of the conversion frame 21 serving as the feeding station; a high-temperature feeding port 22 connected to one side of the conversion frame 21, the high-temperature feeding port 22 including a receiving box and a water mist nozzle disposed in the receiving box; and a low-temperature feeding port 23 connected to the other side of the conversion frame 21, including a trough and a rotatable distribution plate disposed in the trough, with turbulence columns provided on both the trough and the distribution plate; the conversion frame 21 can switch between the high-temperature feeding port 22 and the low-temperature feeding port 23, and can be fixed at the feeding station respectively.

[0062] Specifically, the high-temperature feed inlet 22 includes a receiving box and a water mist nozzle. The receiving box is an inclined trough, and the water mist nozzle inside the receiving box can spray water mist. When the temperature of the granules is high, such as when the surface temperature of the granules is greater than the boiling point of water, the high-temperature feed inlet 22 is fixed at the feeding position, and the granules enter the flow cooling component 3 through the high-temperature feed inlet 22. The water mist nozzle inside the receiving box can spray water mist to initially cool the high-temperature granules. When the water mist comes into contact with the granules, it is evaporated, which can effectively prevent residual moisture inside the granules. When the temperature of the granules is lower than the boiling point of water, the granules can enter the flow cooling component 3 from the low-temperature feed inlet 23. The distribution plate rotates continuously, and together with the turbulence column, it can break up the adhering granules, effectively preventing the granules from sticking together and agglomerating.

[0063] For example, a temperature sensor can be installed at the bottom of the mounting frame 41. The temperature sensor can detect the temperature of the cold air passing through the pellets. Based on the detected temperature, the initial temperature of the pellets entering the high-pressure cooling zone 311 can be determined. If the temperature is high, the tilt angle of the cooling airflow chamber 31 can be reduced to prolong the cooling duration of the pellets, which is beneficial for the pellets to be fully cooled.

[0064] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cooling device for the production of flame-retardant masterbatch for new energy vehicles, located at the discharge end of a pelletizer (1), characterized in that, include: The flow cooling assembly (3) includes a cooling airflow chamber (31) that is gradually inclined downward along the direction of particle movement and a vibrating screen (32) located directly above the cooling airflow chamber (31). The cooling airflow chamber (31) can form an airflow pad above the vibrating screen (32). The vibrating screen (32) has a feed end and a discharge end. The particle distribution feedback component (4) is located above the vibrating screen (32) on the side near the feed end. It includes a mounting frame (41) and a fan blade (43) rotatably connected to the mounting frame (41). A speed sensor (44) is connected to the rotation shaft (42) of the fan blade (43). The particle distribution degree is determined according to the rotation speed of the fan blade (43). The control component (5) controls the tilt angle of the cooling airflow chamber (31) and the vibration amplitude of the vibrating screen (32) according to the detection value of the speed sensor (44); The lower the rotational speed of the fan blade (43), the smaller the tilt angle of the cooling airflow chamber (31), and the greater the vibration amplitude of the vibrating screen (32).

2. The cooling device for producing flame-retardant masterbatch for new energy vehicles according to claim 1, characterized in that, The cooling airflow chamber (31) is divided into a high-pressure cooling zone (311), a constant-pressure cooling zone (312), and a low-pressure cooling zone (313) along the direction of the granule travel. The air temperature increases sequentially from the high-pressure cooling zone (311) to the low-pressure cooling zone (313). The vibrating screen (32) is provided with guide ribs (321) in the area corresponding to the constant-pressure cooling zone (312).

3. The cooling device for producing flame-retardant masterbatch for new energy vehicles according to claim 2, characterized in that, It also includes a support base, and the bottom of the cooling airflow chamber (31) near the low-pressure cooling zone (313) is rotatably connected to the support base. The control assembly (5) includes: The lifting drive unit (51) is located between the support seat and the cooling airflow chamber (31) and is used to drive the cooling airflow chamber (31) to lift and lower on the side near the high-pressure cooling zone (311). A first vibration motor (52) is connected to the cooling airflow chamber (31), and the output shaft of the first vibration motor (52) is connected to the vibrating screen (32) to drive the vibrating screen (32) to vibrate.

4. The cooling device for producing flame-retardant masterbatch for new energy vehicles according to claim 3, characterized in that, The cooling airflow chamber (31) is connected to a mounting column, the first vibration motor (52) is mounted on the mounting column, the vibrating screen (32) is movably connected to the mounting column, and an adjustment component is provided on the mounting column for adjusting the installation height of the vibrating screen (32).

5. The cooling device for producing flame-retardant masterbatch for new energy vehicles according to claim 1, characterized in that, The distance between the plane of the airflow cushion and the plane of the vibrating screen (32) is L, the average height of the granules is h, and the vibration range of the vibrating screen is d, wherein L is greater than h and d is less than the difference between L and h.

6. The cooling device for producing flame-retardant masterbatch for new energy vehicles according to claim 3, characterized in that, It also includes a control component, which is electrically connected to the speed sensor (44), the lifting drive unit (51) and the first vibration motor (52).

7. The cooling device for producing flame-retardant masterbatch for new energy vehicles according to claim 1, characterized in that, The vibrating screen (32) has arc-shaped rolled edges on both sides along the direction of the grain movement.

8. The cooling device for producing flame-retardant masterbatch for new energy vehicles according to claim 2, characterized in that, It also includes a bulk material assembly (6), which comprises: A bulk material screen (61) is provided above the area of ​​the constant pressure cooling zone (312) and the low pressure cooling zone (313) of the vibrating screen (32). Bulk material bars are arranged on the bulk material screen (61) along the guide ribs (321). The second vibration motor (62) is used to drive the bulk material screen (61) to vibrate, and the vibration direction of the bulk material screen (61) is opposite to the vibration direction of the vibrating screen (32).

9. The cooling device for producing flame-retardant masterbatch for new energy vehicles according to claim 3, characterized in that, A feeding assembly (2) is provided between the discharge end of the pelletizer (1) and the flow cooling assembly (3), and the feeding assembly (2) includes: A conversion frame (21) is connected to the support base, and the middle part of the conversion frame (21) is a feeding station; A high-temperature feed inlet (22) is connected to one side of the conversion frame (21). The high-temperature feed inlet (22) includes a receiving box and a water mist nozzle disposed in the receiving box. The low-temperature feed inlet (23) is connected to the other side of the conversion frame (21), including a feed trough and a material distribution plate rotatably disposed in the feed trough. Both the feed trough and the material distribution plate are provided with turbulence columns. The conversion frame (21) can switch between the high-temperature feed port (22) and the low-temperature feed port (23), and is fixed at the feeding station respectively.

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