Cooling device of double-screw extruder

Abstract

The utility model discloses a cooling device of a double-screw extruder, belongs to the technical field of extruders, and aims to solve the problems that the production efficiency of the extruder is influenced by the poor heat dissipation effect of a fan only and the production quality of products is influenced by non-uniform heat dissipation caused by the fixed position of the fan in the conventional cooling device. The front end of the extruder body is provided with a console, the top of the extruder body is provided with an extrusion pipeline, the top of the extruder body is provided with a feed hopper corresponding to the extrusion pipeline, and the outer wall of the extrusion pipeline is provided with a cooling pipe sleeve. Water in the first water conveying pipe, the second water conveying pipe, the third water conveying pipe and the cooling pipe sleeve circulates, under the action of the cooling box, the cooling pipe sleeve carries out heat emitted by the extrusion pipeline, the temperature in the extrusion pipeline is reduced, meanwhile, the cooling pipe sleeve is matched with the air cooling mechanism to achieve rapid cooling, the cooling rate is increased, and the cooling efficiency is improved. And the production efficiency of the extruder is further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of extruders, and in particular relates to a cooling device for a twin-screw extruder. Background Art

[0002] In plastic extrusion molding equipment, plastic extruder is usually called the main machine, and the subsequent equipment plastic extrusion molding machine is called the auxiliary machine. The twin-screw extruder is developed on the basis of the single-screw extruder. Due to its good feeding performance, mixing and plasticizing performance, exhaust performance, extrusion stability and other characteristics, it has been widely used in the molding and processing of extruded products. The twin-screw extruder is composed of several parts such as transmission device, feeding device, barrel and screw. The function of each component is similar to that of the single-screw extruder. During the production process, the pipe temperature of the twin-screw extruder will gradually rise, so it is necessary to use a cooling device to dissipate heat to ensure the normal production and processing of the extruder.

[0003] In the prior art, the heat dissipation of the twin-screw extruder is only carried out through the fan outside the pipeline, which cannot quickly and effectively dissipate the heat of the pipeline. The poor heat dissipation effect affects the production efficiency of the extruder. At the same time, the installation position of the fan in the existing air-cooled heat dissipation is fixed, resulting in a fixed blowing position, which makes the heat dissipation of the pipeline uneven, affecting the production quality of the plastic products inside the pipeline.

[0004] Therefore, a cooling device for a twin-screw extruder is needed to solve the problems in the prior art that the cooling device only relies on the fan for heat dissipation, which has poor effect on affecting the production efficiency of the extruder and the fan position is fixed, resulting in uneven heat dissipation and affecting product production quality. Summary of the invention

[0005] The utility model aims to provide a cooling device for a twin-screw extruder to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cooling device for a twin-screw extruder, comprising an extruder body, a control console is arranged at the front end of the extruder body, an extrusion pipe is installed on the top of the extruder body, a feed hopper corresponding to the extrusion pipe is installed on the top of the extruder body, a cooling pipe sleeve is installed on the outer wall of the extrusion pipe, a water pump is fixedly connected to the top of the extruder body near the rear end, a first water pipe is fixedly connected to one side of the water pump, a second water pipe is fixedly connected to the other side of the water pump, a cooling box is fixedly connected to the other side of the second water pipe, a third water pipe is fixedly connected to the other side of the cooling box, a water valve is installed on the top of the second water pipe, a temperature sensor is installed on the outer wall of the cooling pipe sleeve, a plurality of L-shaped brackets are fixedly connected to the top of the extruder body, and an air cooling mechanism corresponding to the cooling pipe sleeve is arranged between the plurality of L-shaped brackets.

[0007] It should be noted in the solution that reinforcement blocks are fixedly connected to the front and rear ends of the extruder body near the bottom.

[0008] It is further worth noting that the inner wall of the cooling pipe sleeve is tightly fitted with the outer wall of the extrusion pipe.

[0009] It should be further explained that the cooling pipe jacket, the first water pipe and the third water pipe are internally connected.

[0010] As a preferred embodiment, the air cooling mechanism includes a mounting cover fixedly connected between a plurality of L-shaped brackets, a threaded rod is rotatably connected between the inner walls on both sides of the mounting cover, a ball nut seat is rotatably connected to the outer wall of the threaded rod, a limiting slider is fixedly connected to the top of the ball nut seat, a heat dissipation fan is installed at the bottom of the ball nut seat, and a servo motor corresponding to the threaded rod is installed on one side of the mounting cover.

[0011] As a preferred implementation, a limiting sliding groove corresponding to the limiting sliding block is provided on the lower surface of the top of the mounting cover.

[0012] As a preferred implementation, the output end of the servo motor passes through one side of the mounting cover and is fixedly connected to the threaded rod.

[0013] Compared with the prior art, the cooling device of a twin-screw extruder provided by the utility model has at least the following beneficial effects:

[0014] (1) By arranging a cooling box and a water pump in coordination, water in the first water pipe, the second water pipe, the third water pipe and the cooling pipe sleeve circulates. Under the action of the cooling box, the cooling pipe sleeve takes out the heat emitted by the extrusion pipe, thereby reducing the temperature in the extrusion pipe. At the same time, the cooling pipe sleeve cooperates with the air cooling mechanism to achieve rapid cooling, increase the cooling rate, and thus improve the production efficiency of the extruder.

[0015] (2) By setting up an air cooling mechanism, turning on the servo motor to drive the threaded rod to rotate back and forth, the ball nut seat drives the heat dissipation fan to move back and forth, cooperating with the cooling pipe sleeve to evenly dissipate heat for the extrusion pipe, thereby improving the production quality of plastic products inside the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the utility model from a first perspective;

[0017] Figure 2 This is a schematic diagram of the structure of the utility model from a second viewing angle;

[0018] Figure 3 This is a schematic diagram of the structure of the utility model from a third viewing angle;

[0019] Figure 4 It is a structural schematic diagram of the air cooling mechanism of the utility model.

[0020] In the figure: 1. extruder body; 2. control panel; 3. extrusion pipe; 4. feed hopper; 5. cooling pipe sleeve; 6. water pump; 7. first water pipe; 8. second water pipe; 9. cooling box; 10. third water pipe; 11. water valve; 12. temperature sensor; 13. L-shaped bracket; 14. air cooling mechanism; 1401. mounting cover; 1402. threaded rod; 1403. ball nut seat; 1404. limit slider; 1405. cooling fan; 1406. servo motor. DETAILED DESCRIPTION

[0021] The present invention will be further described below in conjunction with the embodiments.

[0022] See also Figure 1-4 The utility model provides a cooling device for a twin-screw extruder, comprising an extruder body 1, a control console 2 is arranged at the front end of the extruder body 1, an extrusion pipe 3 is installed on the top of the extruder body 1, a feed hopper 4 corresponding to the extrusion pipe 3 is installed on the top of the extruder body 1, a cooling pipe sleeve 5 is installed on the outer wall of the extrusion pipe 3, a water pump 6 is fixedly connected to the top of the extruder body 1 near the rear end, a first water pipe 7 is fixedly connected to one side of the water pump 6, a second water pipe 8 is fixedly connected to the other side of the water pump 6, a cooling box 9 is fixedly connected to the other side of the second water pipe 8, a third water pipe 10 is fixedly connected to the other side of the cooling box 9, a water valve 11 is installed on the top of the second water pipe 8, a temperature sensor 12 is installed on the outer wall of the cooling pipe sleeve 5, a plurality of L-shaped brackets 13 are fixedly connected to the top of the extruder body 1, and an air cooling mechanism 14 corresponding to the cooling pipe sleeve 5 is arranged between the plurality of L-shaped brackets 13.

[0023] Further as Figure 1 , Figure 2 and Figure 3 As shown, it is worth explaining in detail that the front and rear ends of the extruder body 1 are fixedly connected near the bottom with reinforcement blocks, which stabilize the extruder body 1, prevent the extruder body 1 from shaking during operation, and ensure the stability of the extrusion operation.

[0024] Further as Figure 1 , Figure 2 and Figure 3 As shown, it is worth explaining in detail that the inner wall of the cooling sleeve 5 is closely fitted with the outer wall of the extrusion pipe 3, so that the heat generated by the extrusion pipe 3 during operation can be quickly discharged by the cooling sleeve 5.

[0025] Further as Figure 2 and Figure 3As shown, it is worth specifically explaining that the cooling sleeve 5, the first water pipe 7 and the third water pipe 10 are internally connected to ensure that the water in the first water pipe 7, the second water pipe 8, the third water pipe 10 and the cooling sleeve 5 can circulate, thereby timely taking away the heat emitted by the extrusion pipe 3.

[0026] According to the above working process, it can be known that: by setting up the cooling box 9 and the water pump 6, the water in the first water pipe 7, the second water pipe 8, the third water pipe 10 and the cooling pipe sleeve 5 circulates, and under the action of the cooling box 9, the cooling pipe sleeve 5 takes out the heat emitted by the extrusion pipe 3, thereby reducing the temperature in the extrusion pipe 3. At the same time, the cooling pipe sleeve 5 cooperates with the air cooling mechanism 14 to achieve rapid cooling, increase the cooling rate, and thus improve the production efficiency of the extruder.

[0027] Further as Figure 4 As shown, it is worth specifically explaining that the air cooling mechanism 14 includes a mounting cover 1401 fixedly connected between a plurality of L-shaped brackets 13, a threaded rod 1402 is rotatably connected between the inner walls on both sides of the mounting cover 1401, a ball nut seat 1403 is rotatably connected to the outer wall of the threaded rod 1402, a limiting slider 1404 is fixedly connected to the top of the ball nut seat 1403, a heat dissipation fan 1405 is installed at the bottom of the ball nut seat 1403, and a servo motor 1406 corresponding to the threaded rod 1402 is installed on one side of the mounting cover 1401. By setting the air cooling mechanism 14, the extrusion pipe 3 can be evenly cooled, thereby improving the production quality of the plastic products inside the pipe.

[0028] Further as Figure 4 As shown, it is worth explaining in detail that a limiting groove corresponding to the limiting slider 1404 is opened on the lower surface of the top of the mounting cover 1401, and the limiting groove plays a role in limiting and guiding the movement of the limiting slider 1404, so that the cooling fan 1405 can move back and forth stably.

[0029] Further as Figure 4 As shown, it is worth explaining in detail that the output end of the servo motor 1406 passes through one side of the mounting cover 1401 and is fixedly connected to the threaded rod 1402, ensuring that the servo motor 1406 can drive the threaded rod 1402 to rotate stably and provide driving force for the movement of the cooling fan 1405.

[0030] This solution has the following working process: in actual use, the temperature in the extrusion pipe 3 gradually rises, and the cooling box 9 and the water pump 6 are turned on to allow water to circulate between the first water pipe 7, the second water pipe 8, the third water pipe 10 and the cooling sleeve 5. The cooling sleeve 5 takes out the heat emitted by the extrusion pipe 3 in time. At the same time, the servo motor 1406 is turned on to drive the threaded rod 1402 to rotate back and forth, so that the ball nut seat 1403 drives the heat dissipation fan 1405 to move back and forth, and cooperate with the cooling sleeve 5 to evenly dissipate heat for the extrusion pipe 3. The temperature sensor 12 monitors the temperature of the cooling sleeve 5 in real time. The staff controls the water flow rate by adjusting the water valve 11, so as to flexibly adjust it according to the actual temperature.

[0031] In summary: by setting the cooling box 9 and the water pump 6 in coordination, the water in the first water pipe 7, the second water pipe 8, the third water pipe 10 and the cooling pipe sleeve 5 circulates, and under the action of the cooling box 9, the cooling pipe sleeve 5 takes out the heat emitted by the extrusion pipe 3, thereby reducing the temperature in the extrusion pipe 3. At the same time, the cooling pipe sleeve 5 cooperates with the air cooling mechanism 14 to achieve rapid cooling, increase the cooling rate, and thus improve the production efficiency of the extruder; by setting the air cooling mechanism 14, the extrusion pipe 3 is evenly dissipated, thereby improving the production quality of the plastic products inside the pipe.

Claims

1. A cooling device for a twin-screw extruder, comprising an extruder body (1), characterized in that: A control console (2) is provided at the front end of the extruder body (1); an extrusion pipe (3) is installed at the top of the extruder body (1); a feed hopper (4) corresponding to the extrusion pipe (3) is installed at the top of the extruder body (1); a cooling pipe sleeve (5) is installed on the outer wall of the extrusion pipe (3); a water pump (6) is fixedly connected to the top of the extruder body (1) near the rear end; a first water pipe (7) is fixedly connected to one side of the water pump (6); a second water pipe (8) is fixedly connected to the other side of the water pump (6); a cooling box (9) is fixedly connected to the other side of the second water pipe (8); a third water pipe (10) is fixedly connected to the other side of the cooling box (9); a water valve (11) is installed at the top of the second water pipe (8); a temperature sensor (12) is installed on the outer wall of the cooling pipe sleeve (5); a plurality of L-shaped brackets (13) are fixedly connected to the top of the extruder body (1); and an air cooling mechanism (14) corresponding to the cooling pipe sleeve (5) is arranged between the plurality of L-shaped brackets (13).

2. A cooling device for a twin-screw extruder according to claim 1, characterized in that: Reinforcement blocks are fixedly connected to the front and rear ends of the extruder body (1) near the bottom.

3. A cooling device for a twin-screw extruder according to claim 1, characterized in that: The inner wall of the cooling pipe sleeve (5) is tightly fitted to the outer wall of the extrusion pipe (3).

4. A cooling device for a twin-screw extruder according to claim 1, characterized in that: The cooling pipe sleeve (5), the first water pipe (7) and the third water pipe (10) are internally connected and connected.

5. The cooling device for a twin-screw extruder according to claim 1, characterized in that: The air cooling mechanism (14) comprises a mounting cover (1401) fixedly connected between a plurality of L-shaped brackets (13); a threaded rod (1402) is rotatably connected between the inner walls on both sides of the mounting cover (1401); a ball nut seat (1403) is rotatably connected to the outer wall of the threaded rod (1402); a limiting slider (1404) is fixedly connected to the top of the ball nut seat (1403); a heat dissipation fan (1405) is installed at the bottom of the ball nut seat (1403); and a servo motor (1406) corresponding to the threaded rod (1402) is installed on one side of the mounting cover (1401).

6. A cooling device for a twin-screw extruder according to claim 5, characterized in that: A limiting sliding groove corresponding to the limiting sliding block (1404) is provided on the lower surface of the top of the mounting cover (1401).

7. A cooling device for a twin-screw extruder according to claim 5, characterized in that: The output end of the servo motor (1406) passes through one side of the mounting cover (1401) and is fixedly connected to the threaded rod (1402).

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