A cooling device for plastic particle production
By combining air cooling and water cooling with a slitting mechanism, the problem of uneven cooling in plastic granule production was solved, achieving efficient and uniform cooling, and improving product quality and ease of operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGXI JINXIN NEW MATERIALS CO LTD
- Filing Date
- 2025-05-08
- Publication Date
- 2026-06-19
AI Technical Summary
In the current plastic granule production process, the water tank cooling method results in uneven cooling, uneven internal stress of the material, low cooling efficiency, high water consumption, and complicated operation.
The system employs a combination of air cooling and water cooling. The airflow generated by the turbofan removes residual heat after the material leaves the liquid surface. Combined with the pre-cooling of the material by the spray system, a slitting mechanism is set up to cut the cooled plastic into short strips or granules, thereby improving cooling efficiency and uniformity.
It accelerates material cooling and solidification, reduces internal stress, improves product quality and stability, reduces water consumption, simplifies operation processes, and enhances space utilization.
Smart Images
Figure CN224374573U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a cooling device, and more particularly to a cooling device for the production of plastic granules. Background Technology
[0002] Cooling is a crucial step in the production of plastic granules. The quality, performance, and ease of subsequent processing of plastic granules largely depend on the cooling effect. Currently, in the field of plastic granule production, the cooling method for extruded strips is relatively traditional and simple, mostly involving direct immersion in a water tank. After the extruder extrudes molten plastic in strip form, it is directly fed into a water tank, utilizing water's high specific heat capacity and strong heat absorption capacity to rapidly cool and solidify the strip.
[0003] Existing water tank cooling methods primarily rely on natural convection of water to remove heat from strip-shaped materials. However, in actual production, factors such as the material's shape, density distribution, and the angle at which it enters the water tank can lead to inconsistent cooling rates. For example, the surface of the material in contact with water cools faster, while the interior and areas with insufficient water contact cool more slowly. This can easily cause uneven internal stress, resulting in internal stress. Strip-shaped materials require a longer residence time in the water tank to achieve the desired cooling effect. The water temperature gradually rises during the cooling process, and this increase reduces the cooling water's heat absorption capacity, further decreasing cooling efficiency. To maintain cooling effectiveness, frequent water changes are necessary, increasing both water consumption and operational complexity. Utility Model Content
[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a cooling device for the production of plastic granules.
[0005] The technical solution is as follows: A cooling device for plastic granule production includes a tank, a power roller assembly, a limit roller assembly, a guide roller assembly, a rotating roller, guide blocks, a frame, a perforated frame, and a turbine fan. The tank has a liquid storage chamber, and the tank has injection and drainage pipes connected to the liquid storage chamber inside the tank. Guide roller assemblies are located on both the upper left and right sides of the tank. Two rotating rollers are positioned between the two guide roller assemblies on the tank, one of which is located in the lower part of the tank, and the other is installed on the right side of the left guide roller assembly on the tank. Multiple guide blocks are arranged front and back on the left side of the tank, each containing a guide channel. A [missing information - likely a device or component] is installed on the left side of the right guide roller assembly on the tank. The power roller assembly consists of two grooved rollers and a motor. The motor's output shaft is connected to one of the grooved rollers. The two grooved rollers are arranged vertically, and the material passes between them. A limiting roller assembly is located in the upper part of the tank, within the space above and to the right of the right guide roller assembly. A frame is fixedly installed in the upper right part of the tank, and a cutting mechanism is located on the right side of the frame. The cutting mechanism cuts the cooled plastic into short strips or granules. Two square slots are opened in the upper part of the frame, and a perforated frame is installed in each square slot. A turbine fan is installed in the lower part of each perforated frame. When the turbine fan rotates, the airflow flows upward from the frame through the perforated frame.
[0006] More preferably, the slitting mechanism includes a mounting base, a lifting base, a blade holder, and a cutter. The mounting base is fixedly provided on the upper right side of the frame. The mounting base is used to install the lifting drive component. The lifting base is slidably provided on the lower part of the mounting base. The blade holder is connected to the lower part of the lifting base. The cutter is installed in the blade holder. When the cutter moves up and down, its left side will contact the right side of the groove.
[0007] More preferably, it also includes a spray frame and spray pipes. The spray frame is located on the left side of the tank, and the spray pipes are arranged in a zigzag pattern at the bottom of the spray frame. Several spray nozzles are provided at the bottom of the spray pipes. The spray frame is located in the space above the left guide roller assembly.
[0008] More preferably, it also includes guide sleeves, pressure frames and springs. Guide sleeves are symmetrically arranged on the left side of the tool holder, and pressure frames are slidably arranged between the guide sleeves. Several notches are opened on the pressure frames, and springs are provided on the pressure frames. One end of the springs is connected to the guide sleeves.
[0009] More preferably, it also includes a cover, with the cover located on the left side of the tank, the cover surrounding the space on the left side of the tank.
[0010] The beneficial effects are:
[0011] 1. In this invention, after the material enters the water tank for cooling, an air-cooling component is installed at the point where it leaves the liquid surface. This component promptly removes residual moisture from the surface of the material and some of the heat remaining inside the material during the cooling process, accelerating the cooling and solidification speed of the material and improving cooling efficiency. At the same time, the combination of air cooling and water tank cooling allows for more uniform cooling of the material, effectively reducing internal stress caused by uneven cooling and preventing deformation and cracking problems in subsequent processing, thereby improving the product quality and stability of the plastic granules.
[0012] 2. In this utility model, a spray device is set up to spray liquid onto the plastic material before it enters the tank. The spray device can pre-cool the plastic material in advance, effectively reducing the initial temperature of the material when it enters the tank, reducing the cooling burden in the tank, and improving the overall cooling efficiency.
[0013] 3. This utility model is equipped with a cutting mechanism to cut the cooled plastic into short strips or granules. By directly connecting the processing components, it effectively reduces material transfer costs, improves space utilization, and facilitates subsequent packaging, transportation and storage of materials. Attached Figure Description
[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0015] Figure 2 This is a three-dimensional structural diagram of the power roller assembly, limit roller assembly, and guide roller assembly of this utility model.
[0016] Figure 3 This is a three-dimensional structural diagram of the frame and its components of this utility model.
[0017] Figure 4 This is a three-dimensional structural diagram of the spraying mechanism of this utility model.
[0018] Wherein: 1-trough, 2-power roller group, 21-limiting roller group, 3-guide roller group, 31-rotating roller, 32-guide block, 4-frame, 41-mounting seat, 42-lifting seat, 43-knife holder, 44-cutting knife, 5-guide sleeve, 6-pressure frame, 61-spring, 7-spray frame, 71-spray pipe, 8-perforated frame, 81-turbo fan, 9-cover. Detailed Implementation
[0019] Although this invention may be described with respect to a particular application or industry, those skilled in the art will recognize its broader applicability. Those skilled in the art will understand that terms such as "above," "below," "upward," "downward," etc., are used to describe the drawings and not to indicate a limitation on the scope of the invention as defined by the appended claims. Any numerical designations such as "first" or "second" are merely illustrative and not intended to limit the scope of the invention in any way.
[0020] Example 1
[0021] A cooling device for producing plastic pellets, such as Figure 1-3 As shown, the system includes a tank body 1, a power roller assembly 2, a limiting roller assembly 21, a guide roller assembly 3, a rotating roller 31, a guide block 32, a frame 4, a perforated frame 8, and a turbine fan 81. The tank body 1 has a liquid storage chamber, and an injection / drainage pipe is provided on the tank body 1, communicating with the liquid storage chamber inside the tank body 1 to facilitate the injection or discharge of cooling liquid. Guide roller assemblies 3 are located on the upper left and right sides of the tank body 1, each consisting of a mounting frame and multiple rollers arranged in the same direction within the mounting frame. The roller surface of group 3 is smooth, which can reduce the friction of the material during the transmission process and ensure the smooth movement of the material. Two rotating rollers 31 are provided between the two guide roller groups 3 on the tank body 1. One rotating roller 31 is located in the lower part of the tank body 1, and the other rotating roller 31 is installed on the right side of the left guide roller group 3 on the tank body 1. The rotating roller 31 can rotate freely and is driven by the material to rotate and change the transmission direction of the material, so that the material can fully contact the cooling liquid in the tank body 1 during the transmission stage.
[0022] Multiple guide blocks 32 are arranged front and back on the left side of the trough 1. The guide blocks 32 have guide channels. The inner wall of the guide channels is smooth and matches the outer diameter of the strip plastic. When the material passes through the guide channels, it can be accurately guided to the left guide roller group 3, ensuring the straightness and stability of the material transmission and avoiding the material from deviating or tangling. A power roller group 2 is installed in the left area of the right guide roller group 3 on the trough 1. The power roller group 2 consists of two grooved rollers and a motor. The output shaft of the motor is connected to one of the grooved rollers. The two grooved rollers are arranged vertically. The material passes between the two grooved rollers. The motor drives the grooved rollers to rotate, providing forward power for the material, so that the material can be transmitted at a set speed and direction. At the same time, the grooves on the grooved rollers can increase the friction with the material and prevent the material from slipping during transmission.
[0023] A limiting roller group 21 is provided in the upper part of the tank 1. The limiting roller group 21 is located in the space above the right side of the guide roller group 3. The structure of the limiting roller group 21 is the same as that of the grooved roller. It can limit the material coming out from the guide roller group 3 on the right side, so that multiple strips of plastic are arranged in parallel in a front-to-back arrangement on the tank 1, avoiding the material from being scattered during the transmission process and ensuring that the material can enter the subsequent slitting process neatly.
[0024] like Figure 1 and Figure 3As shown, a frame 4 is fixedly installed on the upper right side of the tank 1. A cutting mechanism is provided on the right side of the frame 4. The cutting mechanism cuts the cooled plastic into short strips or granules. The cutting mechanism includes a mounting base 41, a lifting base 42, a blade holder 43, and a cutting blade 44. The mounting base 41 is fixedly installed on the upper right side of the frame 4. The mounting base 41 is used to install the lifting drive component. The lifting drive component can provide stable power to ensure that the lifting movement of the lifting base 42 is smooth and accurate. The lifting base 42 is slidably installed on the lower part of the mounting base 41. The lifting base 42 and the mounting base 41 are slidably connected by the cooperation of a slide rail and a slider. This connection method allows the lifting base 42 to move up and down under the action of the lifting drive component, and the movement process is smooth and without jamming. The lower part of the lifting seat 42 is connected to the knife holder 43, and the knife holder 43 is equipped with a cutter 44. When the cutter 44 moves up and down, its left side will contact the right side of the tank 1. When the lifting drive unit drives the lifting seat 42 to descend, the cutter 44 descends accordingly and cuts the strip-shaped plastic extending out of the tank 1 into short strips or granules. During the cutting process, the close contact between the cutter 44 and the right side of the tank 1 can ensure the accuracy and stability of the cutting, so that the cut plastic is of uniform size.
[0025] The upper part of the frame 4 has two square slots, each containing a perforated frame 8. A turbine fan 81 is installed at the lower part of each perforated frame 8. When the turbine fan 81 rotates, airflow flows upwards through the perforated frame 8 from inside the frame 4. The evenly distributed holes on the perforated frame 8 ensure uniform airflow. The airflow generated by the rotating turbine fan 81 blows through the slit plastic, accelerating its cooling and removing debris generated during the slitting process, preventing debris accumulation from affecting the slitting effect and product quality.
[0026] Specifically, during material transfer, the material is introduced from the left side of the tank 1. Multiple limiting blocks and grooved rollers on the power roller group 2 enable the simultaneous transfer of multiple strips of plastic from the plastic extruder. Each strip of plastic passes through a guide block 32, which guides the material to the guide roller group 3 on the left side. The material then passes over the upper part of a rotating roller 31 and down to the lower part of another rotating roller 31. The plastic guided here comes into contact with the liquid in the tank 1, achieving initial cooling. It is then introduced to the upper right between the power roller groups 2. The grooved rollers of the power roller group 2 are equipped with multiple grooved rollers, and the number of grooved rollers is the same as the number of guide blocks 32. The power roller group 2 clamps and arranges the multiple strips of plastic and introduces them onto the guide roller group 3 on the right side, ensuring the continuity and stability of material transfer. Then it passes between the limiting roller group 21 and the guide roller group 3. The limiting roller group 21 keeps the multiple strips of plastic parallel to each other in a front-to-back arrangement on the tank 1, thus completing the material layout. The multiple strips of plastic are arranged in a front-to-back arrangement on the tank 1. The right ends of these strips of plastic overlap the right side of the tank 1 and extend out of the tank 1. After passing under the cutter 44, when the slitting conditions are met, the slitting mechanism is activated to cut the cooled plastic into short strips or granules.
[0027] Example 2
[0028] Based on Example 1, such as Figure 1 and Figure 4 As shown, the system also includes a spray frame 7 and a spray pipe 71. The spray frame 7 is fixed to the left side of the tank 1 by welding or bolting. The spray pipe 71 is bent at the bottom of the spray frame 7. The spray pipe 71 is integrally formed with the spray frame 7 or connected by a pipe joint. The lower part of the spray pipe 71 has several spray nozzles, which are evenly distributed at the bottom of the spray pipe 71 and face downwards, so as to accurately spray the cooling liquid onto the material. The spray frame 7 is located in the space above the left guide roller group 3. When the material is guided from the left guide block 32 to the left guide roller group 3, the spray pipe 71 sprays the cooling liquid onto the surface of the material through the spray nozzles. On the one hand, this can further reduce the temperature of the material and improve the cooling effect. On the other hand, it can clean the surface of the material and remove impurities that may be attached to the surface of the material, so as to ensure the purity of the plastic granules subsequently cut.
[0029] like Figure 1 and Figure 3As shown, it also includes guide sleeves 5, pressure frames 6, and springs 61. Guide sleeves 5 are symmetrically arranged on the left side of the tool holder 43 via welding or threaded connections. Pressure frames 6 are slidably arranged between the guide sleeves 5, allowing them to slide freely up and down within the guide sleeves 5. Several notches are formed on the pressure frame 6, the shape and size of which match the strip of plastic. Springs 61 are mounted on the pressure frame 6, with one end connected to the pressure frame 6 and the other end connected to the guide sleeves 5. Springs 61 are always in a compressed state, providing downward elastic force to the pressure frame 6, enabling the pressure frame 6 to move downwards. The trend of movement is such that, since the relative height of the pressure frame 6 is lower than that of the cutter 44, when the cutter 44 moves down to perform the slitting operation, the pressure frame 6 will first contact the tank 1. During the contact process between the pressure frame 6 and the tank 1, the notch on the pressure frame 6 will limit the plastic, keeping the plastic stable at the slitting position and preventing displacement of the plastic during the slitting process, thus ensuring the accuracy of the slitting. The cutter 44 will only cut the material during the descent after the pressure frame 6 contacts the tank 1. This method of limiting the material before cutting can effectively improve the slitting quality and reduce slitting errors.
[0030] like Figure 2 As shown, it also includes a cover 9. The cover 9 is provided on the left side of the tank 1 by welding or bolting. The cover 9 surrounds the space on the left side of the tank 1, and a relatively closed space is formed between the cover 9 and the tank 1. During the cutting process, plastic particles may splash due to the cutting action of the cutter 44. The cover 9 can prevent the cut plastic particles from splashing into the surrounding environment and guide the material to fall according to the preset path.
[0031] Although this disclosure has been shown and described with reference to specific exemplary embodiments thereof, those skilled in the art will understand that various changes in form and detail may be made to this disclosure without departing from the spirit and scope of the disclosure as defined by the appended claims and their equivalents. Therefore, the scope of this disclosure should not be limited to the above embodiments, but should be defined not only by the appended claims, but also by their equivalents.
Claims
1. A cooling device for producing plastic granules, comprising a tank (1) and a liquid storage chamber therein, The tank (1) is provided with a liquid injection and drainage port, which is connected to the liquid storage chamber inside the tank (1); Its features are: It also includes a power roller group (2), a limit roller group (21), a guide roller group (3), a rotating roller (31), a guide block (32), a frame (4), a perforated frame (8), and a turbine fan (81). The upper left and right sides of the tank (1) are provided with guide roller groups (3). Two rotating rollers (31) are provided between the two guide roller groups (3) on the tank (1). One rotating roller (31) is located in the lower part of the tank (1), and the other rotating roller (31) is installed in the right area of the left guide roller group (3) on the tank (1). Multiple guide blocks (32) are arranged front and back on the left side of the tank (1). The guide blocks (32) are provided with guide channels. The power roller group (2) is installed in the left area of the right guide roller group (3) on the tank (1). The power roller group (2) is powered by... It consists of two grooved rollers and a motor. The output shaft of the motor is connected to one of the grooved rollers. The two grooved rollers are arranged vertically. The material passes between the two grooved rollers. A limiting roller group (21) is provided in the upper part of the tank (1). The limiting roller group (21) is located in the upper right space of the right guide roller group (3). A frame (4) is fixedly provided in the upper right part of the tank (1). A cutting mechanism is provided in the right part of the frame (4). The cooled plastic is cut into short strips or granules by the cutting mechanism. Two square grooves are opened in the upper part of the frame (4). A multi-hole frame (8) is provided in each square groove. A turbo fan (81) is installed in the lower part of each multi-hole frame (8). When the turbo fan (81) rotates, the airflow flows upward from the frame (4) through the multi-hole frame (8).
2. The cooling device for producing plastic granules according to claim 1, characterized in that: The slitting mechanism includes a mounting base (41), a lifting base (42), a blade holder (43), and a cutter (44). The mounting base (41) is fixedly provided on the upper right side of the frame (4). The mounting base (41) is used to install the lifting drive component. The lifting base (42) is slidably provided on the lower part of the mounting base (41). The blade holder (43) is connected to the lower part of the lifting base (42). The cutter (44) is installed in the blade holder (43). When the cutter (44) moves up and down, its left side will contact the right side of the groove (1).
3. A cooling device for producing plastic granules according to claim 2, characterized in that: It also includes a spray frame (7) and a spray pipe (71). The spray frame (7) is provided on the left side of the tank (1). The spray pipe (71) is provided at the bottom of the spray frame (7). Several spray nozzles are provided at the bottom of the spray pipe (71). The spray frame (7) is located in the space above the left guide roller group (3).
4. A cooling device for producing plastic granules according to claim 3, characterized in that: It also includes a guide sleeve (5), a pressure frame (6) and a spring (61). The guide sleeve (5) is symmetrically arranged on the left side of the tool holder (43). The pressure frame (6) is slidably arranged between the guide sleeves (5). The pressure frame (6) has several notches. The spring (61) is arranged on the pressure frame (6). The other end of the spring (61) is connected to the guide sleeve (5).
5. A cooling device for producing plastic granules according to claim 4, characterized in that: It also includes a cover (9), which is provided on the left side of the trough (1) and surrounds the space on the left side of the trough (1).