Cooling device for an extruder

Abstract

The utility model discloses a cooling device of extruder, including extruder body, the one side of extruder body is equipped with cooling box, is equipped with mesh belt conveying device in cooling box, the one side of extruder body is equipped with several branch pipes, the downside of every branch pipe is connected with the spray pipe respectively, the lower end of spray pipe is connected with atomizing nozzle, still be equipped with several cooling fans on the upper side of cooling box, the inboard of cooling box is fixedly equipped with fixed plate, and the inboard of cooling box is fixedly equipped with two guide rails between the lower end of fixed plate and the inner bottom part respectively, and the slidable filter screen is embedded between every two guide rails, and the one side of cooling box is equipped with detachable mounting bracket, and two filter screens are fixedly connected with the one side of mounting bracket respectively, and still be connected with circulation mechanism between cooling box and several branch pipes, and still be equipped with several sets of limiting mechanism on cooling box, and the inboard of cooling box is equipped with several refrigeration pipes, and the one side of cooling box is installed with refrigeration plant, the utility model discloses rational in structure has the advantages such as good cooling effect, good limiting effect.

Description

Technical Field

[0001] This utility model relates to the field of extruder technology, and in particular to a cooling device for an extruder. Background Technology

[0002] An extruder is a machine that heats and melts plastic raw materials, extrudes them, and then cools them to form the final shape. After extrusion, a cooling device promptly cools the plastic to ensure it can be molded. Existing extruder cooling devices commonly use either water cooling or air cooling alone to cool the extruded plastic strip. However, water cooling or air cooling alone is not ideal, failing to quickly harden and set the plastic, thus prolonging the cooling time and reducing production efficiency. Furthermore, the plastic strip is prone to positional shifts during transport, leading to sticking and significantly reducing the efficiency of the device. To address these issues, a solution is proposed below. Utility Model Content

[0003] The purpose of this invention is to provide a cooling device for an extruder, which has the advantages of good cooling effect and good limiting effect.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0005] A cooling device for an extruder includes an extruder body, a cooling box on one side of the extruder body, a mesh belt conveyor inside the cooling box, several branch pipes on one side of the extruder body, a spray pipe connected to the lower side of each branch pipe, an atomizing nozzle connected to the lower end of the spray pipe, several supports fixed on both sides of the cooling box, a cooling fan connected between every two supports, a fixing plate fixed on the inner side of the cooling box, two guide rails fixed between the lower end of the fixing plate and the inner bottom of the cooling box, a slidable filter screen embedded between every two guide rails, a detachable mounting bracket on one side of the cooling box, two filters screens fixedly connected to one side of the mounting bracket, a circulation mechanism connected between the cooling box and the several branch pipes, several sets of limiting mechanisms on the cooling box, several refrigeration pipes on the inner side of the cooling box, a refrigeration device installed on one side of the cooling box, and several refrigeration pipes connected to the refrigeration device.

[0006] Preferably, the circulation mechanism includes a circulation pump, which is connected to the interior of the cooling tank via a pipe. The other end of the circulation pump is connected to a main pipe, and several branch pipes are respectively connected to the main pipe.

[0007] Preferably, each of the limiting mechanisms includes a limiting roller, a horizontal plate is fixedly provided on the inner side of the cooling box, a number of vertical plates are fixedly provided at the lower end of the horizontal plate, two support plates are fixedly provided on one side of each vertical plate, and a rotating shaft is connected to each of the limiting rollers, and the rotating shaft is rotatably connected to the two support plates respectively.

[0008] Preferably, a protrusion is fixed on one side of the cooling box, a fixing pin is inserted through the protrusion, the top end of the fixing pin is inserted into the mounting bracket, a return spring is inserted through the fixing pin, and the two ends of the return spring are connected between the tail end of the fixing pin and the upper side of the protrusion.

[0009] Preferably, a flow guide ramp is fixed to the bottom of the cooling box, and a discharge valve is connected to one side of the cooling box.

[0010] The beneficial effects of this utility model are as follows:

[0011] 1. In use, water can be injected into the cooling tank, and the water can be transported to several branch pipes through the circulation structure. Then, the water can be transported to several spray pipes through the branch pipes, and finally, water mist can be sprayed out through several atomizing nozzles. When the plastic strip passes under the atomizing nozzles, it can come into contact with the water mist sprayed by the atomizing nozzles, thereby quickly cooling the plastic strip. When the plastic strip passes under several cooling fans, the cooling fans can blow out cold air, thereby further cooling the plastic strip and drying the residual moisture on the plastic strip. Therefore, the cooling effect of the plastic is greatly improved, and the practicality of the device is further increased.

[0012] 2. The water entering the main pipe of the cooling box can be filtered through the filter screen to prevent impurities in the water from being sprayed onto the surface of the plastic strip through the atomizing nozzle, thus further improving the cooling quality of the plastic strip. Several sets of limiting mechanisms can limit the extruded plastic strip to prevent the plastic strip from shifting position or sticking during transportation. The limiting rollers can prevent further positional shift of the plastic strip, so that the plastic strip can only pass through the distance between two limiting rollers, thus achieving the limiting effect on the plastic strip. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of an embodiment;

[0014] Figure 2 This is a schematic diagram of the internal structure of the cooling box in the embodiment;

[0015] Figure 3 This is a schematic diagram of the rear structure of the cooling box in the embodiment;

[0016] Figure 4This is a partial structural side view of the cooling box in the embodiment.

[0017] Reference numerals: 1. Extruder body; 2. Cooling box; 3. Mesh belt conveyor; 4. Branch pipe; 5. Nozzle; 6. Atomizing nozzle; 7. Bracket; 8. Cooling fan; 9. Fixing plate; 10. Guide rail; 11. Filter screen; 12. Mounting bracket; 13. Circulation mechanism; 14. Limiting mechanism; 15. Refrigeration pipe; 16. Refrigeration device; 17. Circulation pump; 18. Main pipe; 19. Limiting roller; 20. Horizontal plate; 21. Vertical plate; 22. Support plate; 23. Rotating shaft; 24. Protrusion; 25. Fixing pin; 26. Return spring; 27. Guide ramp; 28. Discharge valve. Detailed Implementation

[0018] The following description is merely a preferred embodiment of this utility model, and the scope of protection is not limited to this embodiment. All technical solutions falling within the scope of this utility model's concept should be protected. Identical components are represented by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "bottom" and "top," "inner" and "outer" refer to directions toward or away from the geometric center of a specific component.

[0019] like Figures 1 to 4 As shown, a cooling device for an extruder includes an extruder body 1, a cooling box 2 is provided on one side of the extruder body 1, and a mesh belt conveyor 3 is provided inside the cooling box 2. The starting end of the mesh belt conveyor 3 is located below the discharge port of the extruder body 1, and the plastic strip extruded from the extruder body 1 can be transported through the mesh belt conveyor 3. The structure and operation of the mesh belt conveyor 3 are existing technologies, and therefore will not be described in detail.

[0020] Several branch pipes 4 are provided on one side of the extruder body 1. Each branch pipe 4 is connected to a spray pipe 5 at its lower side. The lower end of the spray pipe 5 is connected to an atomizing nozzle 6. Several supports 7 are fixed on both sides of the cooling box 2. A circulation mechanism 13 is also connected between the cooling box 2 and the branch pipes 4. In use, water can be injected into the cooling box 2, and the water can be transported to the branch pipes 4 through the circulation structure. Then, the water can be transported to the spray pipes 5 through the branch pipes 4. Finally, water mist can be sprayed out through the atomizing nozzles 6. When the plastic strip passes under the atomizing nozzles 6, it can come into contact with the water mist sprayed by the atomizing nozzles 6, thereby quickly cooling the plastic strip. A cooling fan 8 is connected between every two brackets 7. When the plastic strip passes under several cooling fans 8, cold air is blown out by several cooling fans 8, which further cools the plastic strip and dries the residual moisture on the plastic strip. Therefore, the cooling effect of the plastic is greatly improved, and the practicality of the device is further increased.

[0021] The circulation mechanism 13 includes a circulation pump 17, which is connected to the interior of the cooling tank 2 via a pipe. The other end of the circulation pump 17 is connected to a main pipe 18, and several branch pipes 4 are connected to the main pipe 18. By operating the circulation pump 17, water from the cooling tank 2 can be transported to the main pipe 18 via the pipe, and then distributed to the branch pipes 4 via the main pipe 18. Several refrigeration pipes 15 are installed inside the cooling tank 2, and a refrigeration device 16 is installed on one side of the cooling tank 2. The refrigeration pipes 15 are connected to the refrigeration device 16. By operating the refrigeration device 16, the refrigeration pipes 15 can be cooled, thereby reducing the temperature of the repeatedly used water in the cooling tank 2 and ensuring the cooling effect. The structure and operation of the refrigeration device 16 and the refrigeration pipes 15 are existing technologies and will not be described in detail.

[0022] A fixing plate 9 is fixedly installed inside the cooling box 2. Two guide rails 10 are fixed between the lower end of the fixing plate 9 and the inner bottom of the cooling box 2. A slidable filter screen 11 is embedded between each pair of guide rails 10. A detachable mounting bracket 12 is provided on one side of the cooling box 2. The two filters 11 are fixedly connected to one side of the mounting bracket 12. The water source entering the main pipe 18 of the cooling box 2 can be filtered through the filter screens 11 to prevent impurities mixed in the water source from being sprayed onto the surface of the plastic strip through the atomizing nozzle 6, thereby further improving the cooling quality of the plastic strip. When the filter screen 11 is used repeatedly, the mounting bracket 12 can be removed to facilitate the removal and cleaning of the filter screen 11.

[0023] A protrusion 24 is fixedly provided on one side of the cooling box 2. A fixing pin 25 passes through the protrusion 24, and the top end of the fixing pin 25 passes through the mounting bracket 12. A return spring 26 passes through the fixing pin 25, and the two ends of the return spring 26 are connected between the tail end of the fixing pin 25 and the upper side of the protrusion 24. By pulling the fixing pin 25, the top end of the fixing pin 25 can be dislodged from the mounting bracket 12. At this time, the return spring 26 is stretched and generates elastic force. Then the mounting bracket 12 can be pulled to pull out the filter screen 11 for cleaning. After cleaning, the filter screen 11 can be reinstalled back to the initial position. Then, the return spring 26 can drive the fixing pin 25 back to the initial position, so that the top end of the fixing pin 25 is pushed back into the mounting bracket 12. Finally, the mounting bracket 12 and the filter screen 11 can be fixedly installed.

[0024] The cooling box 2 is also equipped with several sets of limiting mechanisms 14, which can limit the extruded plastic strip to prevent it from shifting position or sticking together during transportation. Each set of limiting mechanisms 14 includes a limiting roller 19. A horizontal plate 20 is fixed to the inner side of the cooling box 2, and several vertical plates 21 are fixed to the lower end of the horizontal plate 20. Two support plates 22 are fixed to one side of each vertical plate 21. A rotating shaft 23 is connected to each of the limiting rollers 19, and the rotating shaft 23 is rotatably connected to the two support plates 22. The plastic strip extruded by the extruder body 1 can pass between every two limiting rollers 19. If the plastic strip swings and comes into contact with the limiting roller 19, the limiting roller 19 can prevent the plastic strip from shifting position further, so that the plastic strip can only pass through the distance between two limiting rollers 19, thereby achieving the function of limiting the plastic strip.

[0025] The bottom of the cooling box 2 is also fixed with a guide ramp 27. The guide ramp 27 can guide the water droplets blown off the plastic strip by the cooling fan 8 so that the water droplets can flow to the lowest side inside the cooling box 2. A drain valve 28 is connected to one side of the cooling box 2. The wastewater that is repeatedly used in the cooling box 2 can be discharged through the drain valve 28 so that new water can be injected.

[0026] The specific embodiments described above further illustrate the technical problems, technical solutions, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A cooling device for an extruder, characterized in that, The extruder includes an extruder body (1), a cooling box (2) is provided on one side of the extruder body (1), a mesh belt conveyor (3) is provided inside the cooling box (2), several branch pipes (4) are provided on one side of the extruder body (1), a spray pipe (5) is connected to the lower side of each branch pipe (4), an atomizing nozzle (6) is connected to the lower end of the spray pipe (5), several supports (7) are fixed on both sides of the cooling box (2), a cooling fan (8) is connected between every two supports (7), a fixing plate (9) is fixed on the inner side of the cooling box (2), and a fixing plate (9) is fixed between the lower end of the fixing plate (9) and the inner bottom of the cooling box (2). Two guide rails (10) are provided, and a slidable filter screen (11) is embedded between each pair of guide rails (10). A detachable mounting bracket (12) is provided on one side of the cooling box (2). The two filters (11) are fixedly connected to one side of the mounting bracket (12). A circulation mechanism (13) is also connected between the cooling box (2) and several branch pipes (4). Several sets of limiting mechanisms (14) are also provided on the cooling box (2). Several refrigeration pipes (15) are provided on the inner side of the cooling box (2). A refrigeration device (16) is installed on one side of the cooling box (2). Several refrigeration pipes (15) are connected to the refrigeration device (16) respectively.

2. The cooling device for an extruder according to claim 1, characterized in that, The circulation mechanism (13) includes a circulation pump (17), and the circulation pump (17) is connected to the interior of the cooling tank (2) through a pipe. The other end of the circulation pump (17) is connected to a main pipe (18), and several branch pipes (4) are respectively connected to the main pipe (18).

3. A cooling device for an extruder according to claim 2, characterized in that, Each of the several sets of limiting mechanisms (14) includes a limiting roller (19). A horizontal plate (20) is fixedly provided on the inner side of the cooling box (2). Several vertical plates (21) are fixedly provided at the lower end of the horizontal plate (20). Two support plates (22) are fixedly provided on one side of each vertical plate (21). A rotating shaft (23) is connected to each of the several limiting rollers (19), and the rotating shaft (23) is rotatably connected to the two support plates (22).

4. A cooling device for an extruder according to claim 3, characterized in that, A protrusion (24) is fixedly provided on one side of the cooling box (2), and a fixing pin (25) is provided on the protrusion (24). The top end of the fixing pin (25) is provided in the mounting bracket (12). A return spring (26) is provided on the fixing pin (25), and the two ends of the return spring (26) are connected between the tail end of the fixing pin (25) and the upper side of the protrusion (24).

5. A cooling device for an extruder according to claim 4, characterized in that, The bottom of the cooling box (2) is also fixed with a flow guide ramp (27), and a discharge valve (28) is connected to one side of the cooling box (2).

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