Air-cooled water chilling unit for granulating expandable polystyrene

Abstract

The utility model relates to the technical field of polystyrene processing, and discloses an air-cooled water chilling unit for expandable polystyrene granulation, which comprises a material conveying trough, the angle of the material conveying trough adopts a dip angle design with a low left part and a high right part, and the left side of the bottom of the material conveying trough is fixedly connected with a cross support. A motor is fixedly connected to the bottom of the cross-shaped support, a rotating cylinder is fixedly connected to the output end of the motor, the rotating cylinder is rotatably connected to the interior of the material conveying groove, a plurality of partition plates are fixedly connected to the interior of the rotating cylinder at equal intervals, and a feeding and discharging hole is formed in the bottom of the outer side of the rotating cylinder. According to the utility model, the motor drives the rotating cylinder to rotate, the air outlet cylinder and the air suction fan form air circulation, and the protective shell protects the motor, so that automatic conveying and efficient air cooling of expandable polystyrene materials are realized, the materials with proper temperature can be continuously provided for the subsequent granulation process, and the granulation quality and efficiency are improved.

Description

Technical Field

[0001] This utility model relates to the field of polystyrene processing technology, and in particular to an air-cooled chiller unit for granulation of expandable polystyrene. Background Technology

[0002] Expandable polystyrene is a polymer material widely used in modern industry and daily life. It is a bead-shaped resin made by adding a foaming agent to polystyrene. From a chemical structure perspective, polystyrene is a long-chain polymer compound formed by the polymerization reaction of styrene monomers. It has good rigidity and transparency. Expandable polystyrene introduces a foaming agent that can generate gas when heated, which allows expandable polystyrene to expand and form a porous structure after heating.

[0003] Expandable polystyrene has an extremely low thermal conductivity, making it an excellent thermal insulation material. It is widely used in building wall insulation and refrigeration equipment. It can also be made into various decorative items and toys, enriching people's lives. Due to its many excellent properties and wide range of uses, the production and processing technology of expandable polystyrene is constantly being developed and improved.

[0004] Existing granulation equipment achieves the granulation of expandable polystyrene through heating, melting, extrusion, and cutting operations. In this process, in order to avoid excessive foaming of expandable polystyrene at high temperatures or other quality problems, a cooling system is used to control its temperature.

[0005] While existing air-cooled chiller units reduce temperature during expandable polystyrene granulation through heat exchange between air and chilled water, thus mitigating quality issues caused by excessively high temperatures, the continuous and uneven distribution of expandable polystyrene on the conveyor belt makes it difficult for air-cooled chiller units to provide comprehensive and effective cooling. Air-cooled chiller units primarily use fans to blow cold air onto the expandable polystyrene, but due to the relatively low heat transfer efficiency of air and the difficulty in precisely controlling the direction and range of airflow, the internal temperature of the accumulated expandable polystyrene remains unreduced during transport. This uneven temperature control leads to unstable quality of the expandable polystyrene, affecting the performance and quality of the final product, thereby increasing production costs and the defect rate. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides an air-cooled chiller unit for expandable polystyrene granulation, aiming to improve the problem in the prior art where the distribution of expandable polystyrene on the conveyor belt is not uniform, making it difficult for the air-cooled chiller unit to cool it comprehensively and effectively.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: an air-cooled chiller unit for expandable polystyrene granulation, comprising a material conveying trough, wherein the material conveying trough is designed with a left-low and right-high inclination angle, a cross bracket is fixedly connected to the bottom left side of the material conveying trough, a motor is fixedly connected to the bottom of the cross bracket, a rotating cylinder is fixedly connected to the output end of the motor, the rotating cylinder is rotatably connected inside the material conveying trough, multiple partitions are fixedly connected at equal intervals inside the rotating cylinder, an inlet and outlet hole is opened at the bottom of the outer side of the rotating cylinder, multiple air outlet holes are opened at equal intervals at the top and bottom of the rotating cylinder, an air outlet duct is fixedly connected to the top of the conveying trough, an exhaust fan is fixedly connected inside the air outlet duct, a protective shell is provided at the bottom of the material conveying trough, and a cooling mechanism is provided on the bottom right side of the material conveying trough.

[0008] As a further description of the above technical solution:

[0009] The material conveying trough includes a water tank, a water pump is fixedly connected to the bottom of the water tank, the input end of the water pump is connected to the bottom right side of the water tank, the output end of the water pump is connected to an annular pipe, the annular pipe is located in the upper middle part of the inner side of the protective shell, multiple cooling holes are opened on the inner side of the water tank, and a cooling fan is fixedly connected to the left side of the water tank.

[0010] As a further description of the above technical solution:

[0011] A filter screen is provided on the inner bottom of the protective shell, and a plurality of fixing bolts are equidistantly inserted through the outer bottom of the protective shell. The ends of the plurality of fixing bolts are respectively threaded to the outer side of the filter screen at equal intervals.

[0012] As a further description of the above technical solution:

[0013] The top of the material conveying trough is provided with an inspection cover plate, and multiple fixing bolts 2 are equidistantly inserted through the front and rear sides of the top of the inspection cover plate. The ends of the multiple fixing bolts 2 are respectively threaded to the front and rear sides of the top of the material conveying trough.

[0014] As a further description of the above technical solution:

[0015] A controller is fixedly connected to the lower front part of the water tank, and the controller is electrically connected to the motor, water pump and cooling fan.

[0016] As a further description of the above technical solution:

[0017] A thermometer is fixedly connected to the upper front part of the water tank, and the rear end of the thermometer extends through the interior of the water tank.

[0018] As a further description of the above technical solution:

[0019] The bottom left front and rear ends of the material conveying trough and the bottom right front and rear ends of the material conveying trough are all fixedly connected with support legs, and the bottom ends of the multiple support legs are all at the same height.

[0020] As a further description of the above technical solution:

[0021] Each of the legs is fixedly connected to an anti-slip pad, and the bottom of each of the anti-slip pads is designed to be anti-slip.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the material is moved under gravity by the inclination design of the material conveying trough. The motor drives the rotating cylinder to rotate, and at the same time the air outlet and the suction fan form an air circulation. The protective shell protects the motor, realizing the automatic conveying of expandable polystyrene material. The efficient air cooling can continuously provide materials with suitable temperature for the subsequent granulation process, thus improving the granulation quality and efficiency.

[0024] 2. In this utility model, a water pump draws coolant into a ring pipe to absorb the heat of the material, and a cooling fan accelerates the air through the cooling holes to cool the coolant, thereby achieving efficient cooling of expandable polystyrene material, accurately controlling the material temperature, providing ideal material for the granulation process, and effectively improving granulation quality and production efficiency. Attached Figure Description

[0025] Figure 1 This is a perspective view of the air-cooled chiller unit for expandable polystyrene granulation proposed in this utility model.

[0026] Figure 2 This is a front view of the air-cooled chiller unit for expandable polystyrene granulation proposed in this utility model;

[0027] Figure 3 This is a cross-sectional view of the protective shell in the air-cooled chiller unit for expandable polystyrene granulation proposed in this utility model.

[0028] Figure 4 This is a cross-sectional view of the material conveying trough in the air-cooled chiller unit for expandable polystyrene granulation proposed in this utility model.

[0029] Figure 5This is a cross-sectional view of the cooling mechanism in the air-cooled chiller unit for expandable polystyrene granulation proposed in this utility model.

[0030] Legend:

[0031] 1. Material conveying trough; 2. Cooling mechanism; 201. Water tank; 202. Water pump; 203. Annular pipe; 204. Cooling hole; 205. Cooling fan; 3. Cross bracket; 4. Motor; 5. Rotating cylinder; 6. Baffle plate; 7. Inlet and outlet holes; 8. Air outlet; 9. Protective shell; 10. Filter screen; 11. Fixing bolt one; 12. Inspection cover plate; 13. Fixing bolt two; 14. Controller; 15. Thermometer; 16. Support leg; 17. Anti-slip mat; 18. Air outlet duct; 19. Suction fan. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0033] Reference Figure 1 , Figure 3 and Figure 4 An embodiment of this utility model provides an air-cooled chiller unit for expandable polystyrene granulation, including a material conveying trough 1. The material conveying trough 1 is designed with a left-low and right-high inclination angle. A cross bracket 3 is fixedly connected to the bottom left side of the material conveying trough 1. A motor 4 is fixedly connected to the bottom of the cross bracket 3. A rotating cylinder 5 is fixedly connected to the output end of the motor 4. The rotating cylinder 5 is rotatably connected inside the material conveying trough 1. Multiple partitions 6 are fixedly connected at equal intervals inside the rotating cylinder 5. An inlet / outlet hole 7 is opened at the bottom of the outer side of the rotating cylinder 5. Multiple air outlet holes 8 are opened at equal intervals at the top and bottom of the rotating cylinder 5. An air outlet duct 18 is fixedly connected to the top of the material conveying trough 1. A suction fan 19 is fixedly connected inside the air outlet duct 18. A protective shell 9 is provided at the bottom of the material conveying trough 1. A cooling mechanism 2 is provided on the bottom right side of the material conveying trough 1.

[0034] Specifically, the material conveying trough 1 adopts a left-low, right-high inclination design. When expandable polystyrene material enters the higher right side of the material conveying trough 1, it will naturally move towards the lower left side under the influence of gravity. The cross bracket 3 on the bottom left side of the material conveying trough 1 supports the motor 4. After the motor 4 starts, its output end will drive the rotating cylinder 5 fixedly connected to it to rotate inside the material conveying trough 1. Multiple partitions 6 are evenly distributed inside the rotating cylinder 5, which divide the internal space of the rotating cylinder 5 into multiple independent areas. The inlet and outlet holes 7 opened at the bottom of the outer side of the rotating cylinder 5 are the channels for materials to enter and exit the rotating cylinder 5. When the material moves to the position of the inlet and outlet hole 7, it will enter a region inside the rotating cylinder 5. Multiple air outlet holes 8 are evenly distributed at the top and bottom of the rotating cylinder 5. The air outlet duct 18 fixedly connected to the top of the material conveying trough 1 and the suction fan 19 inside it enhance the air cooling effect. After the suction fan 19 starts, it will generate suction in the air outlet duct 18. This suction will guide the air in the material conveying trough 1 to flow rapidly. This allows more cool air to enter the rotating cylinder 5 through the bottom air outlet 8. The air enters the rotating cylinder 5 through the bottom air outlet 8, making full contact with the material. The airflow carries away the heat from the surface of the material, achieving air cooling. At the same time, the suction fan 19 extracts the hot air passing through the material conveying trough 1 and discharges it to the outside through the air outlet 18, forming a highly efficient air circulation system, which improves the efficiency and effect of air cooling. The protective shell 9 at the bottom of the material conveying trough 1 is mainly used to protect the motor 4, preventing external dust and debris from entering and avoiding damage to the motor 4 and transmission structure. When the rotating cylinder 5 continues to rotate and the area containing the material reaches the position of the inlet / outlet 7 near the material conveying trough 1 again, the material, under the push of gravity and the partition 6, returns to the material conveying trough 1 through the inlet / outlet 7 and continues to move to the left, completing one material conveying and air cooling process. This cycle continues, continuously conveying and air cooling the expandable polystyrene material, providing material that meets the temperature requirements for the subsequent granulation process.

[0035] Reference Figure 2 , Figure 3 and Figure 5 The material conveying trough 1 includes a water tank 201. A water pump 202 is fixedly connected to the bottom of the water tank 201. The input end of the water pump 202 is connected to the bottom right side of the water tank 201. The output end of the water pump 202 is connected to an annular pipe 203. The annular pipe 203 is located in the upper middle part of the inner side of the protective shell 9. Multiple cooling holes 204 are opened on the inner side of the water tank 201. A cooling fan 205 is fixedly connected to the left side of the water tank 201.

[0036] Specifically, the water tank 201 is used to store coolant. The input end of the water pump 202, which is fixedly connected to the bottom of the water tank 201, is connected to the bottom right side of the water tank 201. When the water pump 202 starts, it will draw out the coolant in the water tank 201. The output end of the water pump 202 is connected to the annular pipe 203, which is located in the upper middle part of the inner side of the protective shell 9. The coolant drawn out by the water pump 202 will be transported to the annular pipe 203 through a pipe. The annular pipe 203 surrounds the outside of the motor 4. The coolant flows in the annular pipe 203 and exchanges heat with the air at the bottom of the material conveying tank 1. Since the material carries heat when it moves in the material conveying tank 1, the coolant absorbs heat from the air through the annular pipe 203, thereby indirectly cooling the material. Multiple cooling holes 204 are opened on the inner side of the water tank 201. The left side of the water tank 201 is fixedly connected to A cooling fan 205 is provided. When the cooling fan 205 is started, it accelerates the airflow. The air enters the water tank 201 through the cooling hole 204 and exchanges heat with the coolant in the water tank 201. The flowing air carries away the heat absorbed by the coolant, thereby lowering the temperature of the coolant and achieving cyclic cooling. The cooled coolant can then be pumped back to the annular pipe 203 by the water pump 202 to continue cooling the material in the material conveying tank 1. Throughout the process, the water pump 202 ensures that the coolant circulates between the water tank 201 and the annular pipe 203, continuously absorbing the heat from the material, so that the coolant can dissipate heat in time and maintain a low temperature. This allows for continuous and efficient cooling of the expandable polystyrene material in the material conveying tank 1, providing material with a suitable temperature for the granulation process and improving the quality and efficiency of granulation.

[0037] Reference Figure 1 , Figure 2 and Figure 3 A filter screen 10 is installed on the inner bottom of the protective shell 9, and multiple fixing bolts 11 are equidistantly inserted through the outer bottom of the protective shell 9. The ends of the multiple fixing bolts 11 are threaded to the outer side of the filter screen 10 at equal intervals. A maintenance cover plate 12 is installed on the top of the material conveying trough 1. Multiple fixing bolts 23 are equidistantly inserted through the front and rear sides of the top of the maintenance cover plate 12. The ends of the multiple fixing bolts 23 are threaded to the front and rear sides of the top of the material conveying trough 1. A control device is fixedly connected to the lower middle part of the front side of the water tank 201. Device 14, controller 14 is electrically connected to motor 4, water pump 202 and cooling fan 205; a thermometer 15 is fixedly connected to the upper front side of water tank 201, and the rear end of thermometer 15 extends through the interior of water tank 201; support legs 16 are fixedly connected to the front and rear ends of the bottom left side and the front and rear ends of the bottom right side of the bottom of material conveying trough 1, and the bottom ends of multiple support legs 16 are all at the same height; anti-slip pads 17 are fixedly connected to the bottom of multiple support legs 16, and the bottom of multiple anti-slip pads 17 are all designed to be anti-slip.

[0038] Specifically, the filter screen 10 installed at the bottom inner side of the protective shell 9 is mainly used to filter impurities in the air entering the protective shell 9. The filter screen 10 is fixed to the protective shell 9 by multiple fixing bolts 11, so that cleaning or replacement of the filter screen 10 can be easily done by simply unscrewing the fixing bolts 11. Multiple fixing bolts 13 fix the inspection cover 12 to the top of the material conveying trough 1. When it is necessary to inspect, repair, or clean the inside of the material conveying trough 1, the fixing bolts 13 are unscrewed, and the inspection cover 12 is opened, allowing personnel to directly access the internal components and perform the corresponding operations. The controller 14 at the lower front of the water tank 201 is electrically connected to the motor 4, water pump 202, and cooling fan 205. The controller 14 can be used to adjust the operation according to actual production conditions. The production demand controls the rotation speed of motor 4, thereby adjusting the rotation speed of rotating cylinder 5, controlling the material conveying speed, controlling the start / stop and flow rate of water pump 202 to adjust the circulation speed and cooling effect of coolant in annular pipe 203, controlling the rotation speed of cooling fan 205 to adjust the heat dissipation efficiency of coolant. The temperature gauge 15 on the upper front side of water tank 201 can monitor the temperature of coolant in water tank 201 in real time. According to the temperature displayed by temperature gauge 15, the controller 14 can make corresponding adjustments to water pump 202 and cooling fan 205. Support legs 16 are distributed at the front and rear ends of the bottom of material conveying trough 1, and the bottom height is the same, providing support for the entire equipment. Anti-slip pads 17 are fixed to the bottom of support legs 16 to increase friction with the ground.

[0039] Working principle: The cross bracket 3 on the bottom left side of the material conveying trough 1 supports the motor 4. After the motor 4 starts, its output end drives the rotating cylinder 5, which is fixedly connected to it, to rotate inside the material conveying trough 1. Multiple partitions 6 are evenly distributed inside the rotating cylinder 5, dividing the internal space of the rotating cylinder 5 into multiple independent areas. The inlet and outlet holes 7 opened at the bottom of the outer side of the rotating cylinder 5 are the channels for materials to enter and exit the rotating cylinder 5. When the material moves to the position of the inlet and outlet hole 7, it will enter a region inside the rotating cylinder 5. Multiple air outlet holes 8 are evenly distributed at the top and bottom of the rotating cylinder 5. The air outlet duct 18 fixedly connected to the top of the material conveying trough 1 and the suction fan 19 inside it enhance the air cooling effect. After the suction fan 19 starts, it will generate suction in the air outlet duct 18. This suction will guide the air in the material conveying trough 1 to flow rapidly. This allows more cold air to enter the rotating cylinder 5 through the bottom air outlet 8. The air enters the interior of the rotating cylinder 5 through the bottom air outlet 8 and comes into full contact with the material. The airflow carries away the heat from the surface of the material, achieving air cooling of the material. At the same time, the suction fan 19 draws the hot air that has passed through the material out of the material conveying trough 1 and discharges it to the outside through the air outlet 18, forming an efficient air circulation system, which improves the efficiency and effect of air cooling. The protective shell 9 at the bottom of the material conveying trough 1 is mainly used to protect the motor 4 and prevent external dust and debris from entering, avoiding damage to the motor 4 and the transmission structure. When the rotating cylinder 5 continues to rotate and the area containing the material reaches the position of the inlet / outlet hole 7 close to the material conveying trough 1 again, the material returns to the material conveying trough 1 through the inlet / outlet hole 7 under the push of gravity and the partition 6 and continues to move to the left.

[0040] Furthermore, the input end of the water pump 202, which is fixedly connected to the bottom of the water tank 201, is connected to the bottom right side of the water tank 201. When the water pump 202 starts, it will draw out the coolant in the water tank 201. The output end of the water pump 202 is connected to the annular pipe 203, which is located in the upper middle part of the inner side of the protective shell 9. The coolant drawn out by the water pump 202 will be transported to the annular pipe 203 through a pipe. The annular pipe 203 surrounds the outside of the motor 4. The coolant flows in the annular pipe 203 and exchanges heat with the air at the bottom of the material conveying tank 1. Since the material carries heat when it moves in the material conveying tank 1, the coolant passes through the annular pipe 202. 03 Absorbs heat from the air to indirectly cool the material. Multiple cooling holes 204 are provided on the inner side of the water tank 201. A cooling fan 205 is fixedly connected to the left side of the water tank 201. When the cooling fan 205 is started, it will accelerate the air flow. The air enters the water tank 201 through the cooling holes 204 and exchanges heat with the coolant in the water tank 201. The flowing air carries away the heat absorbed by the coolant, thereby lowering the temperature of the coolant and realizing the circulation cooling of the coolant. The cooled coolant can be pumped by the water pump 202 back to the annular pipe 203 to continue cooling the material in the material conveying tank 1.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., 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. An air-cooled chiller unit for expandable polystyrene granulation, comprising a material conveying trough (1), characterized in that: The material conveying trough (1) adopts an angle design with the left side lower and the right side higher. A cross bracket (3) is fixedly connected to the bottom left side of the material conveying trough (1). A motor (4) is fixedly connected to the bottom of the cross bracket (3). A rotating cylinder (5) is fixedly connected to the output end of the motor (4). The rotating cylinder (5) is rotatably connected inside the material conveying trough (1). Multiple partitions (6) are fixedly connected at equal intervals inside the rotating cylinder (5). An inlet and outlet hole (7) is opened at the bottom of the outer side of the rotating cylinder (5). Multiple air outlet holes (8) are opened at equal intervals at the top and bottom of the rotating cylinder (5). An air outlet duct (18) is fixedly connected to the top of the conveying trough (1). A suction fan (19) is fixedly connected inside the air outlet duct (18). A protective shell (9) is provided at the bottom of the material conveying trough (1). A cooling mechanism (2) is provided on the bottom right side of the material conveying trough (1).

2. The air-cooled chiller unit for expandable polystyrene granulation according to claim 1, characterized in that: The material conveying trough (1) includes a water tank (201), a water pump (202) is fixedly connected to the bottom of the water tank (201), the input end of the water pump (202) is connected to the bottom right side of the water tank (201), the output end of the water pump (202) is connected to an annular pipe (203), the annular pipe (203) is located in the upper middle part of the inner side of the protective shell (9), a plurality of cooling holes (204) are opened on the inner side of the water tank (201), and a cooling fan (205) is fixedly connected to the left side of the water tank (201).

3. The air-cooled chiller unit for expandable polystyrene granulation according to claim 1, characterized in that: The inner bottom of the protective shell (9) is provided with a filter screen (10), and a plurality of fixing bolts (11) are equidistantly inserted through the outer bottom of the protective shell (9). The ends of the plurality of fixing bolts (11) are respectively threaded to the outer side of the filter screen (10) at equal intervals.

4. The air-cooled chiller unit for expandable polystyrene granulation according to claim 1, characterized in that: The material conveying trough (1) is provided with a maintenance cover plate (12) at the top. Multiple fixing bolts (13) are equidistantly inserted through the front and rear sides of the top of the maintenance cover plate (12). The ends of the multiple fixing bolts (13) are threaded to the front and rear sides of the top of the material conveying trough (1).

5. The air-cooled chiller unit for expandable polystyrene granulation according to claim 2, characterized in that: A controller (14) is fixedly connected to the lower front side of the water tank (201), and the controller (14) is electrically connected to the motor (4), the water pump (202) and the cooling fan (205).

6. The air-cooled chiller unit for expandable polystyrene granulation according to claim 2, characterized in that: A thermometer (15) is fixedly connected to the upper front side of the water tank (201), and the rear end of the thermometer (15) extends through the interior of the water tank (201).

7. The air-cooled chiller unit for expandable polystyrene granulation according to claim 1, characterized in that: The bottom left front and rear ends of the material conveying trough (1) and the bottom right front and rear ends of the material conveying trough (1) are all fixedly connected with support legs (16), and the bottom ends of the multiple support legs (16) are all at the same height.

8. The air-cooled chiller unit for expandable polystyrene granulation according to claim 7, characterized in that: The bottom of each of the legs (16) is fixedly connected with an anti-slip pad (17), and the bottom of each of the anti-slip pads (17) is designed to be anti-slip.

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