A fast-cooling twin-screw extruder

Abstract

This utility model discloses a rapidly cooling twin-screw extruder, relating to the field of twin-screw extruder cooling technology. The rapidly cooling twin-screw extruder includes a twin-screw extruder and a mounting frame. A water tank is fixedly connected to the upper surface of the mounting frame. The extrusion head of the twin-screw extruder extends into the interior of the water tank. A partition is fixedly connected to the inner wall of the water tank. A guide frame is fixedly connected to the upper surface of the partition. A guide wheel is rotatably connected to the guide frame. Two first guide plates are fixedly connected to the upper surface of the partition. A baffle is fixedly connected to the upper surface of the partition. The circulation assembly, guide plates, baffle, and first guide plates enable the cooling water to circulate during the cooling of the plastic tube, avoiding localized hot spots and uneven cooling. Simultaneously, the movement of the cooling water itself facilitates heat dissipation, helping to reduce the power consumption of the water cooling assembly.

Description

Technical Field

[0001] This utility model relates to the field of twin-screw extruder cooling technology, and in particular to a fast-cooling twin-screw extruder. Background Technology

[0002] Extruders are essential equipment for producing plastic pipe fittings. They generally consist of a drive system, a feeding system, a temperature control system, a cooling system after discharge, and a winding system. Twin-screw extruders are used in the plastics production process to extrude plastics. They can increase production speed and are widely used in the field of extrusion equipment. The screw in a twin-screw extruder is generally divided into a feeding section, a mixing section, a pressure section, and a discharge section. It is a conventional processing equipment for high-elasticity materials such as plastics and TPE.

[0003] After the plastic is extruded into shape in the extruder, it needs to be cooled to prevent bending due to gravity. Therefore, a cooling system is required. The existing cooling method usually guides the plastic tube into the interior of the water tank, and then uses the internal cooling water to cool the plastic tube as it passes through the water tank. The advantages are high cooling efficiency and low cost. However, since the water in the water tank is static water, the water flow near the plastic tube participates in the cooling process for a long time, which can easily cause uneven cooling or the formation of hot spots, resulting in reduced cooling efficiency. In view of this, we propose a fast-cooling twin-screw extruder. Utility Model Content

[0004] The purpose of this invention is to provide a fast-cooling twin-screw extruder to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a rapidly cooling twin-screw extruder, comprising a twin-screw extruder and a mounting frame, wherein a water tank is fixedly connected to the upper surface of the mounting frame, the extrusion head of the twin-screw extruder extends into the interior of the water tank, a partition is fixedly connected to the inner wall of the water tank, a guide frame is fixedly connected to the upper surface of the partition, a guide wheel is rotatably connected to the guide frame, two first guide plates are fixedly connected to the upper surface of the partition, a baffle is fixedly connected to the upper surface of the partition, a guide plate is fixedly connected to the rear surface of the baffle, the guide plate is arc-shaped, and a circulation component is provided on the partition.

[0006] Preferably, the circulation assembly includes a rotating frame, which is fixedly connected to the upper surface of the partition plate. An axial flow impeller is mounted on the rotating frame, and a second guide plate is fixedly connected to the adjacent side surfaces of the two first guide plates.

[0007] Preferably, a temperature sensor is mounted on the front surface of the first guide plate on the rear side, and a pump body is fixedly connected to the lower surface of the mounting bracket.

[0008] Preferably, the temperature sensor is electrically connected to the pump body, and a triangular plate is fixedly connected to the upper surface of the partition.

[0009] Preferably, a groove is formed on the right side surface of the triangular plate.

[0010] Preferably, the groove has an outlet, and the output end of the pump body is connected to the outlet.

[0011] Preferably, the input end of the pump body extends into the interior of the water inlet tank and is located on the lower side of the baffle.

[0012] Preferably, a chiller is fixedly connected to the lower surface of the mounting bracket.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This fast-cooling twin-screw extruder utilizes a circulation assembly, guide plate, baffle, and first guide plate to enable the cooling water to circulate during the cooling of the plastic tube, avoiding localized hot spots and uneven cooling. At the same time, the movement of the cooling water itself facilitates heat dissipation, helping to reduce the power consumption of the water cooling assembly.

[0015] 2. This fast-cooling twin-screw extruder utilizes a temperature sensor and a backup cooling water feature on the underside of the partition plate to quickly cool down when the temperature rises. At the same time, the triangular plate design ensures that the injection of backup cooling water does not affect the movement of the circulating water. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0017] Figure 1 This is a schematic diagram of the structure of a rapid cooling twin-screw extruder according to the present invention;

[0018] Figure 2 This is a top view schematic diagram of the present invention;

[0019] Figure 3 This is a schematic diagram of the axial flow impeller of this utility model;

[0020] Figure 4 This is a schematic diagram of the water outlet of this utility model;

[0021] Figure 5 This is a schematic diagram of the pump body of this utility model;

[0022] Figure 6 This is a schematic diagram of the partition of this utility model.

[0023] Reference numerals: 1. Twin-screw extruder; 2. Mounting frame; 3. Water tank; 4. Baffle; 5. Guide frame; 6. Guide wheel; 7. First guide plate; 8. Baffle; 9. Guide plate; 10. Rotating frame; 11. Axial flow impeller; 12. Second guide plate; 13. Temperature sensor; 14. Pump body; 15. Triangular plate; 16. Groove; 17. Water outlet; 18. Chiller. Detailed Implementation

[0024] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0025] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0026] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0027] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0028] Please see Figure 1-6This utility model provides a technical solution: a rapid cooling twin-screw extruder, including a twin-screw extruder 1 and a mounting frame 2. A water tank 3 is fixedly connected to the upper surface of the mounting frame 2. The extrusion head of the twin-screw extruder 1 extends into the interior of the water tank 3. A partition 4 is fixedly connected to the inner wall of the water tank 3. A guide frame 5 is fixedly connected to the upper surface of the partition 4. A guide wheel 6 is rotatably connected to the guide frame 5 to guide the movement trajectory of the plastic tube. Two first guide plates 7 are fixedly connected to the upper surface of the partition 4 to facilitate the movement of the first guide plates 7. This design separates the water flow on both sides. A baffle 8 is fixedly connected to the upper surface of the baffle 4, and a guide plate 9 is fixedly connected to the rear surface of the baffle 8. The guide plate 9 guides the water flow to circulate. The guide plate 9 is arc-shaped. A circulation component is provided on the baffle 4. The circulation component, guide plate 9, baffle 8, and first guide plate 7 enable the cooling water to circulate when cooling the plastic tube, avoiding local hot spots and uneven cooling. At the same time, the movement of the cooling water itself facilitates heat dissipation and helps reduce the power consumption of the water cooling component.

[0029] Furthermore, the circulation assembly includes a rotating frame 10, which is fixedly connected to the upper surface of the partition 4. An axial flow impeller 11 is mounted on the rotating frame 10. Second guide plates 12 are fixedly connected to the adjacent side surfaces of the two first guide plates 7. A temperature sensor 13 is mounted on the front surface of the rear first guide plate 7. A pump body 14 is fixedly connected to the lower surface of the mounting bracket 2. The temperature sensor 13 is electrically connected to the pump body 14. A triangular plate 15 is fixedly connected to the upper surface of the partition 4, which ensures that the entry of backup cooling water will not affect the process. The original cooling water movement trajectory, the right side surface of the triangular plate 15 has a groove 16, the inside of the groove 16 is provided with a water outlet 17, the output end of the pump body 14 is connected to the water outlet 17, the input end of the pump body 14 extends into the water inlet 3 and is located on the lower side of the partition plate 4, the lower surface of the mounting bracket 2 is fixedly connected to the chiller 18, by using the temperature sensor 13 and the backup cooling water on the lower side of the partition plate 4, the temperature can be quickly cooled when the temperature rises, and by using the triangular plate 15, the movement of the circulating water will not be affected when the backup cooling water is injected.

[0030] The axial flow impeller 11 can drive water flow along its central axis, and the axial flow impeller 11 is connected to an external drive.

[0031] Working principle: After the plastic tube is extruded through the die head of the twin-screw extruder 1, it enters the interior of the water tank 3 and is guided by the guide wheel 6. At the same time, the external drive drives the axial flow impeller 11 to rotate, which in turn drives the cooling water inside the water tank 3 to move. The moving water comes into contact with the outer surface of the plastic tube and completes heat exchange. When the water moves, the first guide plate 7 and the second guide plate 12 restrict its movement trajectory, making it closer to the plastic tube. When the water moves to the left side of the water tank 3, the baffle 8 and the guide plate 9 can guide the heat-exchanged water to the channel between the first guide plate 7 and the inner wall of the water tank 3 for circulation. The circulated water returns to the vicinity of the axial flow impeller 11. At the same time, the temperature sensor 13 detects the temperature of the cooling water. When the temperature exceeds the threshold, the pump body 14 and the outlet 17 can guide the cooling water under the baffle 4 into the interior of the water tank 3. The direction of movement of the cooling water is the same as the circulation direction when it enters. The temperature of the spare cooling water stored under the baffle 4 is maintained by the chiller 18.

[0032] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A rapid-cooling twin-screw extruder comprising a twin-screw extruder (1) and a mounting frame (2), characterized in that: A water tank (3) is fixedly connected to the upper surface of the mounting frame (2). The extrusion head of the twin-screw extruder (1) extends into the interior of the water tank (3). A partition (4) is fixedly connected to the inner wall of the water tank (3). A guide frame (5) is fixedly connected to the upper surface of the partition (4). A guide wheel (6) is rotatably connected to the guide frame (5). Two first guide plates (7) are fixedly connected to the upper surface of the partition (4). A baffle (8) is fixedly connected to the upper surface of the partition (4). A guide plate (9) is fixedly connected to the rear surface of the baffle (8). The guide plate (9) is arc-shaped. A circulation component is provided on the partition (4).

2. A rapid cooling twin screw extruder according to claim 1, characterized in that: The circulation assembly includes a rotating frame (10), which is fixedly connected to the upper surface of the partition (4). An axial flow impeller (11) is installed on the rotating frame (10), and a second guide plate (12) is fixedly connected to one of the adjacent surfaces of the two first guide plates (7).

3. A rapid cooling twin screw extruder according to claim 2, characterized in that: A temperature sensor (13) is installed on the front surface of the first guide plate (7) on the rear side, and a pump body (14) is fixedly connected to the lower surface of the mounting bracket (2).

4. A rapid cooling twin screw extruder according to claim 3, characterized in that: The temperature sensor (13) is electrically connected to the pump body (14), and a triangular plate (15) is fixedly connected to the upper surface of the partition (4).

5. A rapid cooling twin screw extruder according to claim 4, characterized in that: The right side surface of the triangular plate (15) is provided with a groove (16).

6. A rapid cooling twin screw extruder according to claim 5, characterized in that: The groove (16) is provided with an outlet (17), and the output end of the pump body (14) is connected to the outlet (17).

7. A rapid cooling twin screw extruder according to claim 6, characterized in that: The input end of the pump body (14) extends into the interior of the water inlet tank (3) and is located on the lower side of the partition (4).

8. A rapid cooling twin screw extruder as claimed in claim 1, wherein: A chiller (18) is fixedly connected to the lower surface of the mounting bracket (2).

Images